Diego Garcia Military Base and British Indian Ocean Territory Bill

Lord Callanan Excerpts

Committee stage
Tuesday 18th November 2025 Lords Chamber

Moved by

[Lord Callanan]

1: Before Clause 1, insert the following new Clause—
“Purpose(1) The purpose of this Act is to—(a) cede sovereignty over the Chagos Archipelago,(b) dissolve the British Indian Ocean Territory,(c) provide for the continued British administration of Diego Garcia, and(d) limit the citizenship rights of the Chagossians.(2) Nothing in this Act grants or recognises that Mauritius has sovereignty over the Chagos Archipelago.”Member’s explanatory statement
This amendment seeks to add a purpose clause to the Bill to demonstrate more clearly the Government’s intentions in bringing forward this legislation.

[Lord Callanan (Con)]

My Lords, as my noble friend Lady Noakes said at Second Reading, this Bill is right up there in contention for the title of “worst Bill of this Session”. It is a surrender Bill and the Government should be ashamed of having brought it before your Lordships’ House. The sparsely populated Labour Benches—congratulations to the three Members who have turned up—illustrate how unpopular it is on all sides. We now begin the detailed scrutiny to seek to improve the Bill and to see just how far the Government are willing to move, if at all, to deliver a better deal for the British people and, crucially, for the Chagossians.

My Amendment 1 would put a clear statement of the Bill’s purposes on the face of the Bill. In essence, it is a clear and faithful description of the effects of the provisions of the Bill. It delivers clarity. The Bill does cede sovereignty over the islands, seek to dissolve the British Indian Ocean Territory after 200 years, provide for the continued British administration of Diego Garcia and limit the citizenship rights of the Chagossians.

Strangely, the Bill is completely silent on who shall have sovereignty over the Chagos Archipelago in the future, which is against the precedent set in previous Bills where territory has been conceded. By bringing this Bill, the Government are saying that presumably all these changes are good things that they are justly proud of. I therefore see no reason why the Government should resist this amendment on the grounds of fact. The Minister always seeks to be constructive in her work in your Lordships’ House, so I am sure she would not resist an amendment that delivers essential legislative clarity simply for the sake of delivering an unamended Bill at the end of the scrutiny process.

Against this context, should the Government oppose my amendment we will be led to assume that the Government are in fact embarrassed by the reality of their legislation being set out in simple terms. If they are indeed proud of the Bill, they will have no cause to be embarrassed and should accept the amendment.

Amendments 8 and 9 in the name of my noble friend Lord Lilley put the Government’s fundamental motivations under scrutiny. I certainly will not presume to make my noble friend’s argument for him before he has spoken to his amendments himself, but the question of whether a court exists that could deliver a binding and enforceable judgment on the sovereignty of the Chagos Archipelago is essential to the fundamental purpose of the Bill. I am not aware of such a court, and without such a court the Government’s argument for the necessity of the Bill falls apart.

As we all know, this Bill is not necessary or essential. It may have been framed as such by the international lawyer friends of the Prime Minister and the Attorney-General. It may be the deep conviction of the Foreign Office officials who seem determined to act against Britain’s interests on this issue. It may even be the view of the Attorney-General. But ultimately it is a political decision of this Government. Ministers should not hide behind legal advice. They should come to the House with a positive message of whatever benefits they think the Bill provides to the British people and the Chagossians. That is what normally happens with any other Bill before this House.

While we are debating the subject of international law, as I am sure we will be, I would like to ask the Minister a question. I draw her attention to a 1967 international agreement concerning the availability for defence purposes of the British Indian Ocean Territory. This is an agreement between the United Kingdom and the United States in which we agreed that the British Indian Ocean Territory

“shall remain under United Kingdom sovereignty”.

Do the Government accept that their proposals to cede sovereignty over the territory to Mauritius would involve a breach of their obligations in this treaty? They are always lecturing us on the importance of abiding by international agreements and treaties, so I assume they would not wish to be in breach of an international treaty. I would be grateful if the Minister could tell me what they are proposing to do about that international agreement.

Amendment 21 is designed to improve parliamentary scrutiny of the Government’s actions on Chagos by requiring a ministerial Statement to Parliament when the treaty comes into effect. We know that the Commons were, in fact, denied a substantive debate on ratification, despite long precedent under CRaG requiring that debates should indeed be granted. We know the Government are likely to press ahead with the treaty irrespective of any opposition from these Benches, but their conviction to deliver a deal that is good for no one but Mauritian taxpayers should not mean that we have less parliamentary scrutiny. In fact, as I have said before, if they are so proud of their record, I am sure they would be delighted to come to Parliament to talk about exactly how they are pressing this issue.

Finally, I have indicated my intention to oppose the Motion that Clause 1 stand part of the Bill. In my view, this is a bad Bill that should rightly be consigned to the pile of other uncommenced legislation. If it lacked a commencement clause, I think that would be a very sensible outcome.

Before I give way to the noble Lord, I give Ministers advance notice that I intend to degroup Amendments 14, 64 and 84, and I believe my noble friend Lord Lilley will add Amendment 25 to that, on the subject of a referendum. We will take them out of the next group and talk about them when we get to them. I give way to the noble Lord.

[Lord Purvis of Tweed (LD)]

I am grateful to the noble Lord for giving way. Given that the Bill is to give effect to the treaty, I wonder whether the noble Lord could say a little more, because in introducing his amendment he did not, about how his amendment interacts with Article 1 of the treaty that Parliament has ratified?

[Lord Callanan (Con)]

Well, the Government have said on a number of occasions that ratification does not come into effect until this legislation comes into effect.

[Lord Purvis of Tweed (LD)]

It has been ratified; Parliament has ratified the treaty. It has not been brought into effect, but the treaty, which states that Mauritius is sovereign, has been ratified by Parliament. That is the treaty that the United Kingdom has entered into, and which Parliament has ratified. What is the interaction between that and proposed new subsection (2) of the noble Lord’s amendment, which says:

“Nothing in this Act grants … that Mauritius has sovereignty”?


He is seeking to have an amendment to a Bill which overrides a treaty commitment that Parliament has ratified, is he not?

[Lord Callanan (Con)]

It is a statement of fact that this legislation gives up British sovereignty of the Chagos Archipelago, but it does not say who should have sovereignty—the treaty is a separate matter. The treaty cannot come into effect until the legislation is approved, as I said.

[Lord Purvis of Tweed (LD)]

The noble Lord is just factually wrong. The treaty has been ratified—it is now a treaty. His amendment is seeking to alter the treaty. Article 1 of the treaty, which Parliament has ratified, says that Mauritius is sovereign over the Chagos Archipelago in its entirety, including Diego Garcia. Is he seeking for Parliament now to try to change the treaty which it has ratified?

[Lord Callanan (Con)]

I am saying that we have every right to oppose this legislation. The legislation has come as a result of the treaty that the Government have agreed. We opposed the treaty; we think it is unnecessary. We also oppose the legislation, and we are entitled to table amendments to it because, as the Government have stated, the treaty cannot legally come into effect until the legislation is approved. I beg to move.

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[Lord Hannan of Kingsclere (Con)]

I will, of course, invite an intervention. I do not know what the rules are on intervening on an intervention.

[Lord Callanan (Con)]

I am happy that my noble friend gives way, because, since the noble Lord intervened on me earlier, I have had a chance to check the facts of the case and, unsurprisingly, he is completely wrong. Parliament has not ratified the treaty because Parliament cannot ratify the treaty. The ratification of treaties under the CRaG legislation is a matter for the Government, using the royal prerogative. Parliament can delay the ratification but cannot prevent it. Whatever this House voted, or whatever the House of Commons voted, the Government are entitled, under the royal prerogative, to ratify the treaty in any case. I hope that is helpful to my noble friend.

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[Baroness Chapman of Darlington (Lab)]

We are not saying that this goes to the Security Council. We are saying that there could be further rulings. With respect, that is a bit of a red herring. There could be rulings that affect how we are able to operate on the base. There could be votes at the General Assembly, which the noble Lord, Lord Purvis, explained quite well. He is right; we could veto something at the Security Council, but we do not anticipate that, and that is not the legal threat that we are concerned about. It is a different legal threat.

If there are no further interventions, I respectfully request that the noble Lord withdraw his amendment.

[Lord Callanan (Con)]

I thank the Minister for her replies. This has been an interesting debate. As she says, this is how the first debate in Committee normally goes. It is fairly wide ranging, and I am sure we will return to many of these issues.

Just before I address some of the other issues, I return briefly to the noble Lord, Lord Purvis. We have already made the point that it is not Parliament’s role to ratify treaties under CRaG. Parliament has the right to delay them only, but the Government still have the right to agree them. I am not questioning the Government’s right to agree treaties under the royal prerogative. I might not like it—in fact, I really dislike it—but of course they have the right to do that. The reality is that they have now presented us with a Bill to implement the treaty that they have agreed. We fundamentally disagree with that treaty, so we have the perfect right to put forward amendments to the Bill that they have presented us with—the Table Office has ruled our amendments in order—and to debate them and vote on them if we wish.

I particularly thank my noble friend Lord Lilley for his excellent amendments in this group. I look forward to working with him throughout Committee and Report. We should certainly return to the question of international law on Report. My noble friend Lord Hannan made some excellent arguments as well.

I listened carefully to the Minister’s reply to my amendments, and I will look carefully at her remarks before we return to the Bill next year on Report. However, there is one point that she has not addressed. I return to and reiterate the point around the 1967 agreement with the United States. There was not a CRaG process in 1967, but that treaty, which has presumably been ratified, was agreed under whatever process we had then. Does the Minister not think it is still valid? Would she like to reply to that?

[Baroness Chapman of Darlington (Lab)]

I am very happy to respond to that, and I am very sorry for not including that in my closing remarks. Obviously, the UK and the US are party to that treaty, and parties to treaties can agree to do things with those treaties. I remind the noble Lord and everybody else that the US very much supports what we are doing with our treaty with Mauritius.

[Lord Callanan (Con)]

Is she saying that the United States has agreed to abrogate that treaty?

[Baroness Chapman of Darlington (Lab)]

I am saying that the United States publicly and in terms supports the treaty that we have agreed as a Parliament to ratify with Mauritius.

[Lord Callanan (Con)]

I heard that, but that was not in fact the question that I asked. If the original agreement is still in force—it is still an international treaty and is presumably still lodged—I assume that the Minister is telling me that the US has not yet agreed to abrogate that treaty. Therefore, if we concede the sovereignty of the BIOT, we are in breach of that treaty. She wants to talk to her noble and learned friend the Attorney- General, who is so keen to refer to international law all the time.

[Baroness Chapman of Darlington (Lab)]

My point is that we will be doing so with the consent of the other party to the treaty.

[Lord Callanan (Con)]

I will look at Hansard, but I do not think that she has answered the question here.

The other point I want to make, going back to the point from the noble Lord, Lord Purvis, is that I think he said at one stage that he has proposed amendments—plural. I can see only one amendment, unless another one has gone in recently that I have not yet seen.

[Lord Purvis of Tweed (LD)]

I am happy to clarify. There will be a second, consequential amendment. As I mentioned in my remarks, there is a principal amendment and there will be a consequential amendment. I am sure the noble Lord is looking forward to reading and supporting them.

[Lord Callanan (Con)]

I do not see much problem with the one that is there. I will look at any other consequential amendments in detail. I am grateful to the noble Lord for his clarification, but I am slightly confused by the Liberal Democrats’ position. Their Members in the House of Commons thought the Bill was so bad that they voted against it at Third Reading, yet all the Liberal Democrat Benches in this House have proposed only one, fairly mild amendment. From the noble Lord’s remarks so far, and indeed how they voted on the original CRaG amendment, they certainly seem fairly supportive of this treaty, which seems a strange position to be in. I am sure we will return to many of these issues in future rounds of debate. In the meantime, I beg leave to withdraw my amendment.

Amendment 1 withdrawn.

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That is what we did in the 1980s, and it was reconfirmed in January 2024. We have an opportunity, perhaps limited but no less important, to restore some of the rights that have been denied to a community, enshrined in the treaty in 1982, paid for by £4 million in what could well have been a very flawed agreement then, and restated in 2024. I want all noble Lords in our debates going forward in Committee and on Report to ensure that we are not using the rights of a community as a proxy for politics—we are using this to try to restore some of the rights so shamefully taken away 40 years, and two years, ago.

[Lord Callanan (Con)]

My Lords, I am very interested to hear all the contributions from noble Lords on this important debate on the consultation of the Chagossians, or rather the lack of consultation. There have been some powerful speeches, particularly that from the noble Lord, Lord McCrea. Establishing a permanent representative of the Chagossians, as he proposes in his Amendment 37, would indeed be a very powerful thing. I think everybody has agreed that we need to give them a voice. They have not been properly consulted by the Foreign Office, and I am happy to concede to the noble Lord that they were not properly consulted by previous Governments either. No legislative scrutiny will change that.

The noble Lord postulated that it was a bit like him being offered the Dauphin of France, but, given the distance from Northern Ireland to Paris and that from Mauritius to the Chagos, it would be more appropriate for him to be offered the monarchy of Azerbaijan rather than Paris. But the Foreign Office needs to consult the community properly, and that process might be helped if they had a champion of their own.

Amendment 49 speaks to an interesting question about a shared civic identity between the Chagossians and the Mauritians. I think everybody has agreed that there really is not one. This reminded me of the contribution of my noble friend Lord Biggar at Second Reading. In pure terms of identity and self-determination, it makes absolutely no sense that Mauritius and the Chagos Islands should be lumped together in this way. It all stems from some bizarre decision by British imperial administrators many years ago and has absolutely nothing to do with the interests of the Chagossians.

We all know that the Chagossians have not been properly consulted, and that when I tabled an amendment to the committal Motion that would have required a consultation before the Bill could proceed, the Government, and the noble Baroness, Lady Chapman, from the Dispatch Box, raised concerns about the practicality of any such consultation. In fact, the noble Baroness said in a meeting we held with others afterwards that 30 days was not long enough. Fair enough; it is a reasonable point. But when I asked how long was long enough, answer came there none. The Foreign Office has no interest whatever in consulting because, I suspect, despite what the Minister says about there being different opinions among the community, she knows what answer she would get. As it would find it far too difficult a question, the Foreign Office has sidestepped it completely and said that there is no self-determination right for the Chagossians in this case.

This, in my view, is not an acceptable state of affairs and we firmly believe the Government must consult the Chagossian community. It is great that the International Relations Committee is now doing so, but given the time available because the Government would not agree to extend the time for this Bill any further, there is no substitute for a proper consultation. The committee will do its best in the limited time it has.

I will return to the issue of a referendum later, but in the absence of a proper consultation with the Chagossian community in the lead-up to the UK Government’s decision to reach agreement with Mauritius, we see this as a very reasonable step to ensure that they are not left out in the cold as the future of the islands they once called home is determined as they are handed over lock, stock and barrel to a nation they know very little about.

The Government’s treatment of the Chagossians is nothing less than shameful, and I believe we have an opportunity to remedy that in some small way with these amendments. There are many other things that I could say about these amendments, but I think I will leave it at that.

[Baroness Chapman of Darlington (Lab)]

My Lords, it is worth restating—and many of the contributions this afternoon have stated this too—that this Government deeply regret the way the Chagossians were removed from the Chagos archipelago. If I can commend just one speech that we have heard in consideration of this group, it would be that from the noble Lord, Lord McCrea. I found that an impactful, passionate speech that was sincerely given and heartfelt. I do not think I am going to make him happy this afternoon, but what he said was sincerely felt and I respect the way he put his argument and many of the things he said.

We remain committed to building a relationship with the Chagossian community that is built on respect and an acknowledgement of the wrongs of the past. I know—and I agree with much of what has been said—that this House clearly feels very strongly about Chagossians and ensuring that their views are properly heard. We have agreed that the International Relations and Defence Committee will undertake an important piece of work looking at Chagossian views on the treaty. We are looking forward to its report and I am sure we will all read it with great interest.

Turning to the arguments we have just debated, Amendments 13 and 28—I think the noble Lord said he was degrouping Amendments 14, 25, 64 and 84—all relate in some way to holding a referendum or some sort of consultation with Chagossians on the transfer of the Chagos archipelago to Mauritius. I know we have said before—there will be some repetition of argument on these issues—that in the negotiations on the treaty between the United Kingdom and the Government of Mauritius, our priority was to secure the full operation of the base on Diego Garcia. I accept that there will be those who disagree with that priority.

The Chagos archipelago has no permanent population and has never been self-governing. Therefore, on the question of self-determination for its population, the English courts have, noting the conclusion of the ICJ in the 2019 advisory opinion, proceeded on the basis that the relevant right to self-determination in the context of BIOT was that of Mauritius rather than of Chagossians. That feels incredibly cold and hard to read from this Dispatch Box, but that is the situation legally as determined by English courts. I do not think it helps anybody, not least the Chagossians, to somehow pretend that that is not the case. That is the situation we are in. We can regret that, we can argue about it, we can say that should not be the case; but that is the legal reality.

In a series of judgments since the 1970s, both the English courts and the European Court of Human Rights have also considered the related but distinct question of an alleged right of abode or other rights that are said to flow from that. On each occasion, the English courts and the European Court of Human Rights have ultimately dismissed the claims. The transfer of sovereignty therefore does not deprive Chagossians of any existing right. This is a long-standing legal position that previous UK Governments have also adopted.

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[Baroness Hoey (Non-Afl)]

My Lords, I will speak to my Amendments 45, 46, and 48. Following on from the noble Lord, Lord Hannan, these are measures that would in some way perhaps help to make the Chagossian people feel that we had listened to their genuine concerns. Now, all of us who have been involved with the Chagossians have been seeing a lot of very written and spoken letters and speeches about what they went through, and why these amendments in particular would be something that could move things forward for them. In particular, 95 Chagossians have written who were born on the islands and are here. These are men and women who lived very peaceful, self-sufficient lives on the islands, including Diego Garcia, until the day they were forced on to the ships and told they would never see their homeland again.

It is important that we—for the public out there who perhaps have not grasped the detail of this—just repeat some of the things that they have said and why these amendments might make a slight difference. They all tell the same story. They describe being ordered to leave their homes with only what they could carry. Some recall arriving at the jetty to see their dogs and livestock taken from them and killed before they were pushed on to the ship. Others remember family members separated, possessions thrown into the sea and the moment the islands disappeared over the horizon: as one said, “The day the world went dark”. One native islander, now in her 70s, said, “We left our islands with nothing but our clothes. They took our dogs from us, howling. We were pushed onto the boat and told we would never return. Our children and grandchildren still do not have the documents that say who we really are”. Another said, “They took my home and now they take my identity. My passport says nothing of where I come from. We want to remain British with the right to return to our islands. We do not want to become Mauritian”.

I should add that Chagossians living in Mauritius report that, more recently, Mauritian authorities have already begun to replace their recorded place of birth—changing it to simply “Mauritius”—and in some cases their birth dates. So their birthplace, their identity and their history are being administratively erased.

Amendment 45 is on passports and official documentation. Chagossians have lived for a long time without anything that really recognises their origins, because their birthplace was depopulated, renamed and reclassified: in administrative terms, their existence as a people was largely erased. This amendment ensures that Chagossians can hold passports and documents affirming their historic identity and their connection to the Chagos Archipelago and the British Indian Ocean Territory. That identity, let us not forget, was never surrendered voluntarily. It was severed by force. As another Chagossian said, “We want the papers that say who we are. We are Chagossians from the Chagos. That must not be erased”. Yet under Clauses 2 to 4, if they are passed unamended, the United Kingdom would relinquish sovereignty over every island except Diego Garcia, and the legal foundation for recognising Chagossian identity through official documentation would disappear. This amendment helps with that.

Amendment 46 is about citizenship rights for children. Exile produced a citizenship gap that now affects three generations. Had the Chagossians remained on their islands, their children would automatically hold British Overseas Territory citizenship today. But exile broke that line, leaving many Chagossian families undocumented or semi-stateless for decades. This amendment would restore what displacement interrupted: automatic BOTC and BIOT citizenship for children born in the United Kingdom to Chagossian parents. As another native Chagossian wrote, “My children were born here but they do not have the citizenship I would have given them if I had been allowed to live in my home. This is injustice continuing to the next generation”.

Amendment 48 is on the retention of BOTC passports. Many Chagossians still hold a BOTC passport showing that they have a connection to the British Indian Ocean Territory. These are probably among their most treasured possessions because, for many, they are the only official recognition that they belong to those islands. If BIOT is dissolved for all islands except Diego Garcia, these passports will not be renewable and Chagossian identity will disappear again on paper. Ms Colin, one of the Chagossians, wrote, “Do not take our passports from us again. We lost our homes. Must we also lose our true identity?” This amendment would prevent that second erasure.

The legal position is even more troubling, although I have gone on a great deal about the moral one, which I think is hugely important. Nothing in the treaty with Mauritius, international law or the British Nationality Act requires these nationality rights to be removed. The Government are removing them by choice, not necessity. In Section 17H of the British Nationality Act 1981, inserted in 2022, a person with a Chagossian ancestor has the right to be registered as a BOTC and therefore as a British citizen. The connection that matters in law is historic, whether the ancestor was born in the British Indian Ocean Territory or the islands designated as BIOT in 1965. Whether BIOT exists today is irrelevant. Its abolition does not legally require the abolition of Chagossian nationality rights. Only repealing Section 17H does that, and this Bill repeals it.

This has never happened before. There is no precedent in British nationality law for stripping a people of British nationality status when their territory is transferred. In every previous case, from Kenya in 1963 to Saint Kitts and Nevis in 1983, people lost British territorial citizenship only because they gained a new citizenship of their own independent territory. Chagossians have no such citizenship to inherit. Had the transfer of the islands occurred after the registration window opened in 2022, the handover would have had no impact on Chagossian nationality rights. Their status and their ability to transmit it to their children would have remained intact.

The Government’s justification that BOTC is tied to a continuing connection with a British territory is incompatible with the very reason Section 17H was created. The purpose of that section was historical restitution, recognising that exile unjustly prevented Chagossians passing citizenship to their children. That injustice has not been remedied simply because the territory is being transferred.

The International Court of Justice made it clear in 2019 that the people of a non-self-governing territory must be consulted and that their freely expressed and genuine will must determine their future. That did not happen in 1965, and it is not happening now. Mauritius speaks of completing decolonialisation, yet ignores the fundamental principle of decolonialisation, which is the right of the people of the territory concerned to self-determination. The people of the Chagos Archipelago, the only people ever to live there, have not been consulted. They have not been given a referendum. They have expressed overwhelmingly that they do not wish their identity, their citizenship rights or their homeland to be handed over without their consent. As one native islander, Mr Joseph Elyse, wrote:

“We want to be recognised as a people before it is too late. Every year more of us natives pass away. We want our rights returned while we are still alive”.


These amendments do not seek advantage; they seek restoration. They would not create extraordinary rights; they would correct extraordinary wrongs. They would ensure that a people removed from their territory in circumstances now acknowledged by everyone as unjust is not erased again through the disappearance of its legal status, documentation and citizenship.

Many of the 95 surviving native islanders were children when they were taken from their homes. Some have died without justice. Those who remain ask for something profoundly simple: “Let the world know who we are, let our children have what was taken from us and let us be Chagossians in law as well as memory”. This House should honour that request. I therefore commend Amendments 45, 46 and 48 to the Committee, and urge noble Lords to support them.

[Lord Callanan (Con)]

I thank my noble friend Lord Hannan of Kingsclere for moving Amendment 3 on behalf of the noble Lord, Lord Morrow. We all hope his family member gets well soon. I also thank the noble Baroness, Lady Hoey, for her very powerful speech.

These amendments all touch on the impact that the Bill will have on the citizenship rights of Chagossians. Clause 4 will limit the rights of those descended from Chagos Islanders to gain British citizenship, in several ways. My amendments in this group also seek to challenge the Government’s approach. It should be noted that settlement in the UK is not what many Chagossians want. Many want to return to the archipelago, and this is something that Ministers have discussed previously. That said, British citizenship should be an option for the Chagossians given the responsibility that I think everybody here believes that we owe them thanks to our historic links and, I am afraid, our record of mistreating their community.

My Amendment 7 would prevent the citizenship provisions coming into effect with the treaty, allowing more time for the Government to consider their approach in domestic law alongside the treaty. It might also allow for greater consultation of the Chagossian community, who are ultimately the people who will be affected by Clause 4. In her reply can the Minister confirm whether the Government have had any conversations with Chagossians about the effect of Clause 4? Can she confirm whether substantive discussions on citizenship rights have been held with the Chagossian contact group, which she claims to have met on a couple of occasions? What was the outcome of those discussions? I would also like to know whether Ministers have made any changes to their plans on citizenship rights as a result of some of the concerns raised by the Chagossian community.

My Amendment 39 probes the limitation of citizenship rights by birth year. Will the Minister please explain why 2027 has been chosen as the cut-off date? What opportunity will there be for the Chagossian community to make a case for its extension, should circumstances require it? Another important issue with any cut-off date for applications is communication. Have Ministers given any consideration to the procedure that should be followed to ensure that eligible Chagossians are contacted about their rights?

I have tabled Amendment 40 to probe the requirement that a person must not have previously held British citizenship to be eligible under the changes made by Clause 4. We can understand why it would not be appropriate for a person who has had their citizenship revoked not to be eligible, but why should a person who has given up their citizenship voluntarily be barred by this clause? I hope the Minister will be able to address these questions.

[Baroness Chapman of Darlington (Lab)]

I thank noble Lords for their speeches. A host of amendments, as we have heard, have been tabled in relation to citizenship rights. Some of them come from a bit of a misunderstanding of what Clause 4 does. I hope that I can explain the detail of what the Bill will mean. If it is not enough, I am very happy to write a letter and put it in the Library, because it is detailed and a little bit complicated. If that would be helpful, that is something I am happy to do. Let me have a go at explaining it all properly this evening and that may suffice.

Clause 4 makes provisions related to British nationality as a consequence of the dissolution of the British Indian Ocean Territory. These provisions are essential to ensure that the existing entitlements the Chagossians have to British citizenship remain unchanged. This clause also amends the British Nationality Act 1981 to reflect that BIOT will no longer be a British Overseas Territory, and as a result no future claims to British Overseas Territory citizenship can be made on the basis of a connection to BIOT.

This will not result in any change to the existing British nationality status that any Chagossian currently holds; this remains protected. Any Chagossian who currently holds British Overseas Territory citizenship retains it. Current routes to British citizenship will also continue to exist with their original expiry dates for application. This clause is vital in order to protect Chagossians’ rights to continue to obtain British citizenship. Seeking to delete the clause would be to play politics with this right.

I turn to the amendments tabled. Amendment 4 is a good example of an amendment that I would gently say is somewhat misconceived in its intent. Chagossians born on the Chagos Archipelago already automatically hold British Overseas Territory citizenship and British citizenship. This amendment would therefore seek to require the Secretary of State to bring forward legislation that would apply to anyone of any nationality born on the Chagos Archipelago once it is no longer a British territory.

The Government are clear that, as BIOT will no longer be an overseas territory, it will no longer be possible to make a new claim for British Overseas Territory citizenship. Instead, the Bill preserves Chagossians’ ability to claim British citizenship. Whether a Chagossian has British Overseas Territory citizenship or not will have no bearing on their ability to claim British citizenship under their bespoke citizenship route.