New Clause 1 - Approval of payments to Mauritius by the House of Commons

Diego Garcia Military Base and British Indian Ocean Territory Bill – in the House of Commons at 9:30 pm on 20 October 2025.

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“(1) No payment may be made by the Government of the United Kingdom to the Government of Mauritius under Article 11 (1)(a) of the Treaty without the approval of the House of Commons.

(2) No development framework under Article 11 (1)(c) may be agreed by the Government of the United Kingdom with the Government of Mauritius without the approval of the House of Commons.

(3) No payment may be made under any development framework agreed between the Government of the United Kingdom and the Government of Mauritius without the approval of the House of Commons.

(4) The approval required by subsections (1), (2) and (3) must be in the form of a resolution of the House of Commons.”—(Priti Patel.)

This new clause requires parliamentary approval for any payment by the UK Government to the Government of Mauritius under the Treaty.

Brought up, and read the First time.

Question put, That the clause be read a Second time.

Division number 317 Diego Garcia Military Base and British Indian Ocean Territory Bill Committee: New Clause 1

Aye: 171 MPs

No: 321 MPs

Aye: A-Z by last name

Tellers

No: A-Z by last name

Tellers

The Committee divided: Ayes 172, Noes 322.

Question accordingly negatived.

The Deputy Speaker resumed the Chair.

Bill reported, without amendment.

Third Reading

King’s consent signified.

Photo of Luke Pollard Luke Pollard The Minister of State, Ministry of Defence 10:41, 20 October 2025

I beg to move, That the Bill be now read the Third time.

In a world that is growing more dangerous, this Labour Government will always put Britain’s security first, and if there is one thing that Members should take away from today’s debate, it is the absolute necessity of this Bill to secure the military base on Diego Garcia, which has played a critical role in defending the UK and our allies for over 50 years. Both the treaty and the Bill guarantee the long-term, secure operation of our military base and ensure that it will continue protecting our national security for generations to come.

Let me take this opportunity to thank Members on both sides of the House for their scrutiny of the Bill throughout its passage. I am grateful to those who contributed to the vigorous debate on Second Reading in September and to those who participated in today’s Committee proceedings. I thank the International Agreements Committee and the International Relations and Defence Committee for their thorough inquiries into the substance of the treaty. In particular, I want to thank the Minister of State, Foreign, Commonwealth and Development Office, my hon. Friend Stephen Doughty, for his tireless efforts in guiding the Bill through the House.

I would also like to thank the officials who worked on the Bill and the treaty, both under this Government and under the previous Government. Lastly, I would like to express my sincere gratitude to our international allies, especially the United States, for their support throughout the treaty negotiation process. Their backing was crucial in ensuring that this treaty, in the words of the US Defence Secretary Hegseth,

“secures the operational capabilities of the base…for many years ahead.”

This treaty also recognises the importance of the islands to the Chagossians. This Government respect the diversity of views within the community, so we will continue to engage with the Chagossian groups over the coming months and years. We have also committed to increase our support through new and existing projects. The US, our Five Eyes partners, India, Japan and the Republic of Korea have all supported this deal. Our adversaries would have loved to see this deal fail and the military base placed under threat, but this Government are not risking our national security, as the Opposition parties would claim we are.

Let me make it clear why we are here today. We inherited a set of negotiations started by the Conservatives. They chose to start negotiations to deliver what Lord Cameron said in January 2024 would be the

“safety, security and long-term viability of this base”.

Sir James Cleverly explained the objectives at this very Dispatch Box. He also said they were to

“secure an agreement on the basis of international law…to strengthen…cooperation” with Mauritius on

“maritime security…the environment…and to tackle illegal migration”.—[Official Report, 3 November 2022;
Vol. 721, c. 27WS.]

That is what this deal secures, and that is why I wish it a speedy and successful passage through the rest of its parliamentary proceedings.

Let us be absolutely clear: the Conservatives started the negotiations. They held 11 rounds, but they failed to secure a deal. It is a question that not a single Tory MP wanted to answer today: why did they start these negotiations if it was so bad? If it was such a threat to national security, why was it a Conservative Government who started the negotiations? Why did they hold 11 rounds? It was a Labour Government who secured the deal; it is a Labour Government who are going to secure the future of our military base, and that is why I commend the Bill to the House.

Photo of Priti Patel Priti Patel Shadow Secretary of State for Foreign, Commonwealth and Development Affairs

Let me begin my remarks by once again paying tribute to the heroic Chagossian community who have joined us once again for this debate and have been here for a good four hours. In response to the Minister’s last point—he may have heard us say this previously on Second Reading and during Opposition day debates—no deal is better than a terrible deal, and the Conservative party would never have put this deal forward.

Throughout the process, the Government—[Interruption.] They can all make as much noise as they want on the Government benches. None of them were here—[Interruption.] They can point their fingers as much as they want; none of them were sitting here earlier to defend their Government on this terrible deal.

Let me come back to the Chagossian community, because throughout this process, they have been silenced and ignored by this Government, and they have faced decades of pain and hurt. [Laughter.] This is not a laughing matter at all. Hon. Members may want to sneer about this, but they should pay some respect to the Chagossian people, because we praise them and are grateful to them for their dignified campaign. There are some Members in this House, even on the Government Benches, who have Chagossians as their own constituents, who they have made representations on behalf of as well. I think we should thank them for the work that they have done.

I also want to thank hon. Members from across the House for their interest in this Bill and their diligent scrutiny. I say that because the Labour Government have sought to keep debates on their surrender treaty as short and restricted as possible, and we have seen that again. [Interruption.] They have not been here to contribute to those debates—what would they know? I am particularly grateful for the efforts of hon. Members who have challenged and debated the Bill, including the interest in the Foreign Affairs Committee evidence session. Opposition Members on the Environmental Audit Committee and the Science and Technology Committee spent valuable time in Select Committees—let me emphasise that: in Select Committees—scrutinising this treaty. Opposition Members have been relentless and I thank them for their forensic questioning and for exposing the scandalous way in which this Government have acted. These debates have benefited from the legal expertise and knowledge of former Ministers and Law Officers, and I am thankful to them for their contribution and support.

I also want to pay tribute to the Minister for the Overseas Territories, Stephen Doughty. He has been diligent in responding to questioning, and he has probably spent more time in the House debating this issue, as well as responding to written communications, than he originally expected. He has become the Minister for defending the indefensible. Although we do disagree robustly on this treaty, we thank him and respect him for his contributions.

Let us be clear: this is a bad Bill for Britain; the Opposition will continue to oppose it, and our colleagues in the other place will give it further scrutiny. It leaves Britain weaker and poorer, it gives succour to our enemies, and it has shown the world that, under Labour, Britain is being governed by weak Ministers who appease the whims of left-wing lawyers and activists, rather than standing up for our national interest. Friend and foe alike will now see Britain as a soft touch that can be bullied by lawfare into waving the white flag of surrender, rather than proudly flying the Union flag.

For Britain’s standing in the world, for our defence and national security, and for our suffering British taxpayers, I bitterly regret the passage of this Bill. For months we have been calling on Labour to step back from the brink and ditch this mind-boggling surrender deal, but this Government have arrogantly blundered on. Britain comprehensively lost in these negotiations, the treaty and the Bill that we have considered today as a result. Ministers have squirmed and rolled over at every turn and have been eaten for breakfast by the Mauritian Government.

Let me be clear: we will oppose this Bill every step of the way in this House and in the other place. It is worth noting that within weeks of coming to power, this soft-touch Government decided that they would end more than 200 years of British sovereignty over this vital territory for our country’s security and national interest, and for no justifiable reason. We are not just giving up the islands of the archipelago; more than that, the national interest is being squandered, and so is peace and stability in that area.

The Government are asking British taxpayers, whom they have already thrashed with vindictive taxes, now to shoulder the burden of this scandalous deal, and it is simply not on. Labour Governments often bang on about the redistribution of wealth, but today they take it to a new level with the redistribution of wealth from Britain to Mauritius. How much of the money will be plundered from the Defence budget, hindering our armed forces’ ability to procure new capabilities at the worst possible time? It comes as the Minister for Defence Procurement has overseen a freeze on procurement as the world gets more dangerous, and we do know that the world is getting more dangerous. The much-vaunted strategic defence review, which Labour pledged would see off all the major threats, was overdue and underfunded—but guess what? Labour has no plan to pay for it now.

Here we are now: the Government have found it within themselves to spend £35 billion on this deal. This is not just money from down the line in the future; it is hundreds of millions of pounds each year within this Parliament. Today the Government have sunk to a new low: Labour MPs have voted against giving Parliament, this House, a say over sending £35 billion of our constituents’ money to Mauritius with no strings attached. Mauritius will now use our money to reduce its debt and cut taxes because of this Government. Labour MPs have voted to block the publication of a summary of legal advice on which the Government relied to make this dodgy deal. We might have thought that they had learnt from the current China debacle that this is not the right way, but no, they still cannot offer a sound legal explanation for why they have rushed through this deal.

The Government have refused to adopt our amendments to ensure the monitoring of how the rights of Chagossians will be safeguarded. The Chagossians, to whom we have a special responsibility, have been neglected and ignored by Labour since the election, so it comes as no surprise—and it is now a bitter blow for them—that there is no cost implication or, indeed, any good reason as to why we are going down this route.

The Government have also declined to adopt our Amendment to keep the Intelligence and Security Committee apprised of the security protections in this treaty, again denying hon. Members the scrutiny to which we are entitled. It is astonishing, in the light of the national security concerns that this terrible deal now brings, and it leaves our country weaker and poorer. This is a deal that this Government and our country will come to regret.

Photo of Al Pinkerton Al Pinkerton Liberal Democrat Spokesperson (Europe) 10:52, 20 October 2025

It gives me no pleasure to say that this Bill fails the Chagossian people. For decades, decisions about the Chagos Islands have been taken without the consent of those most affected. The treaty continues that injustice, offering no guaranteed right of return, no legally binding resettlement plan and no meaningful protection of Chagossian rights.

The Liberal Democrats support negotiations with Mauritius and support respect for international law, but never at the expense of Chagossian dignity. The treaty, as it stands, lacks transparency, environmental safeguards and accountability for the substantial public expenditure that it entails. That is why we tabled seven amendments to inscribe parliamentary oversight, to protect the marine environment and to uphold Chagossian rights to self-determination. That includes provisions for scrutiny of ministerial decisions, mandatory environmental reporting and a referendum of the Chagossian people themselves. We also called for full financial transparency and a review of the welfare of Chagossians living in the UK, many of whom continue to face hardship as a direct result of their historical displacement. This is not merely a matter of geopolitical assets or territorial claims; it is about justice, belonging and moral responsibility to those who call the Chagos islands home.

I thank the Minister of State at the Foreign, Commonwealth and Development Office, Stephen Doughty, for the numerous conversations that we have had during the passage of the Bill—he has been generous with his time. I am disappointed, however, that he did not feel able to accept some of my amendments and suggestions during that process.

I will finish with words lifted from the UN charter, a document that this country helped to shape:

“The Purposes of the United Nations are…to develop friendly relations among nations based on respect for the principle of equal rights and self-determination of peoples”.

That right has been denied to the Chagossian people for more than 50 years, so I urge Members across the House to think carefully when voting this evening about whether they wish to compound that half century of injustice or embrace the foundational principles of the UN. [Interruption.] If this House wishes to do the latter, we cannot allow the Bill to pass without ensuring that Chagossians themselves are sovereign over their citizenship, the governance of their islands and the prospect of return. [Hon. Members: “How are you voting?”] I ask Conservative right hon. and hon. Members on my right-hand side, who have lauded the efforts of the Chagossian people but sat on their hands when they had the opportunity to give Chagossians the right to a referendum, whether they wish to keep chuntering from a sedentary position.

In direct response to the Minister, who challenged this in Committee, I say that the forced displacement of a people does not and cannot annul the identity or the rights of the Chagossians as a people. To suggest otherwise perpetuates the disgraces of the past and, as a sentiment, that is unworthy of this Bill and of this House.

Division number 318 Diego Garcia Military Base and British Indian Ocean Territory Bill: Third Reading

Aye: 316 MPs

No: 171 MPs

Aye: A-Z by last name

Tellers

No: A-Z by last name

Tellers

The House divided: Ayes 320, Noes 171.

Question accordingly agreed to.

Bill read the Third time and passed.

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