Diego Garcia Military Base and British Indian Ocean Territory Bill

Jim Shannon Excerpts

Tuesday 20th January 2026 Commons Chamber

[Priti Patel]

Let me say, for the benefit of everyone in this House, that the United States of America is our strongest ally when it comes to the national security of our country, and rightly so. When the President of the United States raises concerns, we should listen to them, and I would like to think that this Government will act on them.

Let me turn to the details of Lords amendment 5, which would introduce new provisions on transparency about the costs that British taxpayers are being forced to pay. It is vital that this House sees the full costs, as Labour has never acknowledged or accepted the financial costs and burdens of this Bill for the taxpayer. As the House knows, the Conservative party had to force the information out of the Government through freedom of information requests. Labour Ministers have had the bare-faced cheek to come here and give us their valuation of £3.5 billion, whereas the Government Actuary’s Department tells us that it is £35 billion.

In most areas of Government spending, Labour likes to brag about how much is being spent—welfare is a familiar theme that it likes to go on about—but on this issue, it is using a valuation technique to downplay the amount. We have heard the Prime Minister claim that this is

“how the OBR counts the cost”.

However, the Office for Budget Responsibility has said:

“The OBR does not hold any information on the costs or financial impacts of the specific treaty over the future sovereignty of the Chagos Archipelago. We can confirm that we have not been contacted by HM Treasury, MoD or the Governments Actuary’s Department”,

so what is the truth? This amendment would help to bring about more openness and transparency on the costs.

[Jim Shannon (Strangford) (DUP)]

I commend the shadow Minister and the Conservative party on this amendment, which is crucial. The key is whether the British Government have fully briefed the US about the risks to the Pelindaba treaty that will result from Diego Garcia becoming sovereign to Mauritius, because if they have, President Trump will be very glad to comment on that. Does she agree that the thing to do now might be to contact President Trump?

[Priti Patel]

The hon. Gentleman is right that that treaty relates to nuclear weapons coming on to the base at Diego Garcia. That is why our emphasis must be on the strength of the relationship between our two countries when it comes to our national security—this House will not disagree on that—but it is deeply concerning that the President of the United States has explicitly expressed his disapproval of this entire process and this giveaway. To address the hon. Member’s point about the nuclear treaty, we should absolutely be engaging with our closest ally, the United States of America.