Diego Garcia Military Base and British Indian Ocean Territory Bill

Katie Lam Excerpts

Tuesday 20th January 2026 Commons Chamber

[Anna Gelderd (South East Cornwall) (Lab)]

I align myself with the comments made by my hon. Friend the Member for Halesowen (Alex Ballinger).

In South East Cornwall, we may be geographically removed from Diego Garcia, but we are closely connected to the realities of our national defence. Torpoint has the third highest number of veterans of any community, with over 14% of people having served. Residents across the area have written to me about the importance of this issue. His Majesty’s Naval Base Devonport is the largest naval base in western Europe and a key part of our national defence capability, so we are an area that understands the importance of national defence and its complexities. We know that it requires long-term thinking and joint working with multiple allies, each of whom understandably has its own national interests in mind.

Does the Minister agree that this matter is about not just international law, but securing Britain’s ability to defend itself, including control over key capabilities such as berthing submarines, electromagnetic defence and force mobility? Given that 85% of the Chagos negotiations took place under the Conservatives, does the Minister know why the Tories started negotiations when they were in government if they did not think there was a threat to the crucial base?

As well as defence, South East Cornwall has deep ties to our marine environment, with many local livelihoods dependent on the sea. Our local economy relies on a healthy and resilient marine environment, so it is important to recognise the role of that environment. The Chagos marine protected area was established in 2010. Through the Blue Belt programme, the UK has continued to play a leading role in enhancing marine protection across the overseas territories. For Members who may not be aware, this is a brilliant programme that works with local communities to understand biodiversity, manage impacts and build a deeper understanding between people and nature. The marine protected area is home to extraordinary marine life. Research has shown that it contributes to climate resilience at a global scale.

Mauritius has committed to protecting that marine environment, which I welcome. However, as an island state located miles from the base, I have concerns about the practicalities of monitoring and enforcing protections against harmful activity. What provisions in the Bill and the treaty will safeguard the existing marine protected area and ensure that effective enforcement remains in place to prevent harm to the ecosystem and the species that depend on it?

[Katie Lam (Weald of Kent) (Con)]

This Government’s handover of the Chagos islands is nothing short of a disgrace. British taxpayers are being asked to stump up billions of pounds to pay for the privilege of giving away something we own—a strategically vital territory—to a close ally of the Chinese Communist party. And why? All because of an entirely advisory opinion issued by politicised judges in the International Court of Justice.

People across the country are rightly asking why on earth any British Government would agree to a deal that diminishes our strategic capabilities and costs us billions in the process, particularly when the Government are already putting the squeeze on people’s finances in so many ways. The Government’s arguments for doing so were already thin, and they become even thinner when we consider the amendments before us today.

[Tom Hayes]

Another question that might be asked is why the Conservatives started the negotiations in the first place.

[Katie Lam]

The question that we are voting on today is the deal that the Government have agreed to. It is an appalling deal, and it should be opposed.

The Government’s arguments for putting the deal forward become even thinner when we look at the amendments and how the Government have responded to them both here and in the other place. If, as the Government claim, the deal will make us safer, why not support Lords amendment 1, which would ensure that payments are made to the Mauritian Government only if our armed forces retain access to the Diego Garcia base? We have already heard that the Government will not support Lords amendments 2 and 3, but if, as the Government claim, the costs of the deal are proportionate, why not support Lords amendments 5 and 6, which would provide much-needed transparency about why taxpayers are being asked to stump up so much for the privilege of handing away territory? We hear no such support for those amendments, so the Chagos handover cannot really be about our security, the Chagossians or self-determination.

So what is it about? The truth is that this so-called deal is motivated entirely by ideology. We have heard from the Government’s Attorney General that “almost every aspect” of the British empire was “deeply racist”, echoing the language used by the Mauritians at the International Court of Justice. Of course, when Britain has done something seriously wrong, we should be honest about that, but in the case of the Chagos islands, there was no original British sin. Mauritius never had sovereignty over the Chagos islands, and practically no Mauritians have ever lived there. The islands have been under British sovereignty since 1814, before which they were occupied by the French. Before that, they were uninhabited. This is no decolonisation; it is a surrender.

Our history is complex. It contains cruelties, yes, but also enormous contributions to human health, wealth and flourishing around the world. The darkest moments in our history were hardly unique, yet many of the most virtuous moments in that history were truly exceptional. I believe that we should be proud of the contributions that our country has made to the world. However, the Government’s position on the amendments lays bare the truth: they simply do not agree. Instead, they believe that it is their responsibility to go around the world flagellating themselves and righting imagined wrongs on behalf of and at the expense of the British taxpayer. To their minds, this country is indelibly stained by the actions of those who came before us. The Chagos surrender is one such example, but it is not the only one, and I fear it will not be the last. To attempt to right the wrongs, real or imagined, of the distant past by squeezing the taxpayers of today is divisive madness.

If the Government ever want the British people to believe that they are motivated by anything other than deep shame about our history, they would do well to accept the amendments before us today or—far better—to scrap this deal entirely. The British people are owed a Government who stand up for their interests today, not punish them for the imagined sins of our ancestors.

[Sammy Wilson (East Antrim) (DUP)]

This is a sad day for the United Kingdom. The Government have not been prepared to stand up for the interests of the United Kingdom. Indeed, they seem to be willing to surrender when any challenge is made to its interests.

Let us look at some of the arguments that the Minister has made against the amendments. First, the Minister said that nothing has changed since the Bill was originally brought to the House, but of course we have seen that the American attitude has changed. The United Nations says that we are not giving the protections to the people we should be giving them to—in fact, we are more interested in the rights of the Danes who live in Greenland than the Chagossian population. The UN has actually said that we should stay this. So there have been changes, and the changes have been substantial.

The second argument we heard is that the base was under threat and we therefore had to make changes. I noticed what the hon. Member for South East Cornwall (Anna Gelderd) said about the marine protected area and the environmental requirements on the Mauritian Government, but there is no legal requirement in this treaty for the Mauritian Government to protect the marine protected area. Indeed, they have made it quite clear that fishing will be allowed in the marine protected area. What is the danger there? It is of course that Chinese ships can come into the area, and we know that in the South China sea, the Chinese have used commercial ships as their eyes and ears, so the base is under threat as a result of this change.