Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Phil Brickell and Al Pinkerton

2nd reading
Tuesday 9th September 2025 Commons Chamber

[Phil Brickell]

Thank you, Madam Deputy Speaker.

Labour has finished what the previous Government started—what was left to us after former Prime Minister Liz Truss let the genie out of the bottle in starting negotiations with Mauritius in 2022. That was reported, and much maligned, by Matthew Parris in The Spectator at the time—let us not forget that. This Government have sought to strike a deal in Britain’s best interests, given the legal mess that they inherited. Let us be clear: this agreement secures the future of the Diego Garcia base. Britain retains control of the base, as the Minister confirmed in response to my intervention near the start of the debate. There is a protective buffer zone, and no foreign security forces will be on the outer islands. There will be a robust mechanism to prevent interference, and for the first time, Mauritius has agreed back the base’s operations. That is a huge strategic win.

What about cost? Let us get this clear, because some of the disinformation coming from the Conservative party is concerning; it is unnecessarily setting hares running about the future of other British overseas territories, including the Falkland Islands and Gibraltar. The overall cost has not changed from that negotiated with the former Mauritian Prime Minister, and suggestions to the contrary are simply false. When set against the cost of inaction, the financial component is modest. It is far cheaper than the spiralling costs of legal uncertainty, and far cheaper than the price we would pay if Chinese expansionism went unchecked in the Indian ocean. For a fraction of our defence budget, we will secure a cornerstone of global stability. Let us not forget that the agreement will have an average annual cost that represents 0.008% of total Government spend, according to the Government Actuary’s Department.

[Dr Pinkerton]

Earlier in his very carefully crafted speech, the hon. Gentleman said that this deal protects freedom. One of the freedoms that citizens of the British overseas territories to which he referred most appreciate is the freedom to determine their own future. Why does he think that Chagossians should be made an exception and denied the right to determine their own future?

[Phil Brickell]

I am sure that the Minister will come to that in his closing remarks. I have to concur with other Members that the way the Chagossians were treated in the ’60s and ’70s was utterly shameful. I am proud that there will be rights of return, and the ability to visit.

Conservative Members claim to be the champions of defence, but that is not borne out by the facts, which include an 18% cut in defence spending in their first five years in government, and their shrinking the Army to its smallest size since the Napoleonic era. In how many years out of 14 was the target of 2.5% of GDP spent on defence hit? Zero. They should not lecture Labour Members on national security. The Government’s plan is straightforward, transparent and serious. We have the largest increase in the defence budget since the cold war; we are rebuilding alliances that previous Governments wantonly vandalised; we are acting where there was dither; we are governing in the national interest; and, importantly, we are securing the long-term future of the Diego Garcia base.

It is clear that a binding adverse judgment against the UK was inevitable. Since 2015, 28 international judges have expressed views on Chagos sovereignty. That was under the previous Government, and not one of those 28 judges backed Britain’s claim. Without an agreement, our ability to operate the base would have been compromised. Overflight clearances would have been at risk, contractor access would have been uncertain, communications would have degraded, costs would have soared, and investment would have fallen. Who would that benefit? I put that to Conservative Members, but I will give them a clue: it is not Britain, and not Britain’s allies. This deal secures Diego Garcia, cements our role in the Indo-Pacific, strengthens our ability to push back against Chinese influence, and shows that Britain is a dependable ally that takes national security seriously.

I wish to make a closing remark on the reasoned amendment by the Reform party, in the names of the hon. Members for Clacton (Nigel Farage), for Boston and Skegness (Richard Tice), for Runcorn and Helsby (Sarah Pochin) and for Ashfield (Lee Anderson), who seem not to be present. I will read out a part of it that I am gobsmacked nobody has picked up on in this debate:

“because the reason for the UK-Mauritius Treaty and for bringing forward this Bill follows a judgment from the International Criminal Court, from which the UK does not recognise judgments as binding, only advisory”,

they will oppose this Bill. I want Reform to answer: which case before the International Criminal Court is it referring to? Is Reform suggesting that, were it to come to power, it would not recognise the binding judgments of the International Criminal Court? Will it take us out of the ICC? Unfortunately, Reform Members are not here to respond.

The Conservatives opened the door to this treaty. Labour inherited a legal mess, but it has delivered a deal in the long-term national interest. For a small cost, we have achieved a huge strategic win. That is why I am proud to support this Bill, and I will vote with the Government tonight.