Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Lord Hannan of Kingsclere and Lord Lilley

Committee stage
Tuesday 18th November 2025 Lords Chamber

[Lord Lilley (Con)]

I will speak in favour of Amendments 2, 13, 25 and 28. Amendment 2 is an all-purpose amendment saying that the treaty should not come into force until other conditions in amendments are incorporated. Amendments 13 and 28 call for consultation, and Amendment 25 for a referendum.

As I have mentioned previously, the advisory ruling of the International Court of Justice was based on a non-binding UN resolution about the process of decolonisation. That ruling explicitly says that a colonial state can sever part of a territory if it is the freely expressed and genuine will of the people of the territory concerned that they be separated.

The Chagossians cite the example of the Gilbert and Ellice Islands. The parallel between the Gilbert and Ellice Islands and the situation of Chagos versus Mauritius is striking. When the Government consulted the people of the Gilbert and Ellice Islands before ceasing to be the colonial power, they found that there was considerable opposition in the Ellice Islands to being lumped in with the Gilbert Islands. The parallels between that and the Chagos Islands and Mauritius are very striking. The Chagos Islands are 1,339 miles away from Mauritius, and the Ellice Islands are just 800 miles away from the Gilbert Islands. The Chagos Islands have a different ethnic mix. They are basically populated by people from the African continent, whereas that is not the case in Mauritius. Likewise, with the Gilbert and Ellice Islands, one was Polynesian and one was Micronesian. The disparity of numbers is, if anything, even greater in the case of the Chagos Islands versus Mauritius than it was in the Ellice and Gilbert Islands.

After consulting, the British Government rightly decided that they should test the views of the people concerned. They had a referendum, and the vote was very striking. The people of the Ellice Islands voted to separate from the Gilbert Islands by 3,799 votes to 293. This is a comparatively small number of people—fewer, in fact, than the diaspora of Chagossian peoples in the UK, the Seychelles and Mauritius itself. It surely is possible for us to consult with them and seek their views, ideally through a referendum. The Government may say, “Why have a referendum? It’s so difficult. We can’t do it”. But the Chagossians themselves have today given the results of an opinion poll they have carried out, which 3,500 people responded to out of roughly 10,000 potential respondents. That is a very high proportion. Of those 3,500, an overwhelming proportion were against being lumped in with Mauritius.

The Government may well say that it is still only a minority of the total population. That is fair enough. Again, suck it and see—have a referendum of the total. Who would be the potential electors? The Chagossian nationals would be, as defined in this Bill. We have done that bit for the Government, so that is already there. It is clearly possible over a period to consult them if the Chagossians can organise a poll like this fairly rapidly and with such a high response rate.

The Government often argue that the Chagossians are “not really a people and in any case they’re no longer there”. However, there are precedents in history for people being removed from a place and allowed back. The Acadians were shipped out of Canada because they were thought to be unreliable French-speaking Catholics but subsequently were allowed back and are still a distinctive community in that part of Canada. Similar things have happened with the Chechens and the Crimeans more recently, after the Second World War. In history, we all know the displacement that was suffered by the ancient Israelites. It is possible to say that people who have been removed from a territory still have a right to that territory and should be consulted about its sovereignty.

These amendments seek to ensure that we do have a referendum. Failing that, if the Government can convince us that it is impossible in some way to organise a referendum, let us have a thorough and prolonged period of consultation. I would like to hear more from the Government on what they are doing now, having been provoked into it by the amendment to the committal Motion to ask the relevant Select Committee of this House to carry out a consultation. How are they envisaging that being carried out, and how will they define the Chagos consultation groups and so on? I think your Lordships’ House would almost certainly welcome greater information about that process and how the Government see it happening. If they do not satisfy us on this, I think we need to press ahead with Amendments 13 and 28 on the consultation, but ideally let us go ahead and have a referendum under Amendment 25.

[Lord Hannan of Kingsclere (Con)]

My Lords, I introduce Amendment 29 in the name of the noble Lord, Lord Morrow, who is prevented by a family illness from being here. His amendment draws attention to the contradiction between the principles in this Bill and some of the UN resolutions dealing with when it is valid to partition a territory. The legal case on which the Government rest, as we established in the last round of amendments, is fundamentally UN Resolution 1514, which was the basis of the Mauritian claim that it was wrong to have divided the territory at independence.

This is an extraordinary precedent to set. The idea that if a territory, for reasons of administrative convenience, was at one time governed from somewhere else, that creates a lasting claim, would upend borders on every continent and in every archipelago. It would mean that Aden and Somaliland are again governed from India, and that the Cayman Islands are again governed from Jamaica. If we extend beyond British territories, it would mean that the Philippines were governed from Mexico, and that Bolivia was again governed from my native Peru, which was the seat of the viceroyalty. It would be an extraordinary principle.

Indeed, when read in context, the UN is not arguing that. If it did, it would have opposed the split of Czechoslovakia, the independence of Montenegro from Serbia, and so on. Of course it does not argue that. The three resolutions referred to by the noble Lord, Lord Morrow, essentially establish criteria where it is proper to divide a territory for reasons of geography, history, ethnic distinction or nationality—a sense of being a people and wanting to live in your own polity. As we just heard from my noble friend Lord Lilley, all those criteria are plainly met in this case. When the Chagos Islands were ceded by the French in 1814, they were ceded as a separate territory from Mauritius. They are populated by a different population, one that came from the west rather than from the east. The only reason that they were governed from Mauritius was not because they were part of Mauritius but because there is nowhere among those sparse and beautiful atolls suitable for a seat of government. It is similar to some of our continuing overseas territories in the Atlantic today, visited occasionally by a governor because there is no permanent seat there.

This is the key group of amendments—and the crux of the entire debate is the question of consulting the people who have the most at stake. They are the only people who have ever constituted a permanent population of that archipelago and their descendants, the people defined in this Bill as the citizens of the BIOT. My noble friend Lord Lilley gave a very good example: the consultation between the Ellice Islands and the Gilbert Islands at the moment of independence. They felt that they had not enough in common to accept government from each other’s hands, so the Ellice Islands became the monarchy of Tuvalu and the Gilbert Islands became the Republic of Kiribati. The distances here, ethnically and geographically, are much wider. There is not much doubt that if we had carried out a consultation in 1965, we would have had the same outcome as in the case cited by my noble friend.

Why does that suddenly stop being true now? Why does the passage of time invalidate that claim? This is a proposal to hand the Chagossian people to a nation that has never governed them, never seen them as part of their demos, that was very happy to renounce all claims in perpetuity and trouser a cash sum in exchange for doing so, and which has continued to treat the archipelago in essentially pecuniary terms. Why not test the proposition today?

I repeat a point made by my noble friend Lord Bellingham at Second Reading. It is perfectly logistically feasible to conduct a referendum across scattered territories. Last year I voted for our absent colleague—my noble friend Lord Hague of Richmond—to be Chancellor of the University of Oxford. There was a poll that was conducted electronically across five continents, the alumni being dispersed in their tens of thousands. There was a simple enough process. You establish the right of somebody to vote, you establish their identity, you show that they genuinely are an alumnus, then you have the vote. We have established who would be eligible here, and the right of descent that conveys BIOT citizenship.

I refuse to believe that it is logistically beyond us to consult the Chagossian people. I cannot speak for everyone on this side, but I am pretty sure that if the Chagossian people voted overwhelmingly for Mauritian citizenship, opposition to this proposal would dissipate and people would accept it as a valid exercise of self-determination. There is something more than perverse about acting in the name of decolonisation when taking a people against their will and transferring them to the sovereignty of a foreign state, a country whose Prime Minister at the time of the partition said that it is a territory which they never visit and of which they know little.

When I was a Member of the European Parliament, Crawley was part of my constituency. I got to know some of the disparate groups that represent our Chagossian fellow subjects, and it is fair to say that they did not always agree on every issue—like many small communities, they had a broad diversity of opinions on a lot of subjects—but honestly, hand on heart, I do not think I ever recall meeting any Chagossian in this country who wanted to be a citizen of Mauritius. There are reasons for that. The experience of Chagossians in Mauritius was not a happy one: they were confined in slums, and they were subjected to, in their eyes, racism and discrimination. The idea that we are now placing this entire population, against their will, because of a non-binding opinion from a tribunal without jurisdiction is a truly extraordinary and shameful moment.