Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Priti Patel and Jim Allister

2nd reading
Tuesday 9th September 2025 Commons Chamber

[Priti Patel]

I will not; I have given way plenty of times to the hon. Gentleman.

The surrender of sovereignty means that Britian will be a rule taker, taking the laws, rules and commands of Mauritius, and that restricts and impedes base operations. For example, Mauritius has signed up to the Pelindaba treaty, banning the stationing and storage of nuclear weapons; no Minister has been able to provide a definitive answer when questioned about how that may impact our security and defence, once the UK is no longer sovereign in, or able to exercise sovereign rights over, the Chagos islands and Diego Garcia.

Under the terms of the treaty, we are bound to notify Mauritius of various activities relating to our use of the base, including operations from the base against that country, and movements of our allies’ vessels. Despite heavy questioning, at no point have Ministers explained in detail how the notifications will work, and who will have access to the information.

[Jim Allister (North Antrim) (TUV)]

The shadow Foreign Secretary is coming to the nub of the matter. This is about the future security of the world, including the United Kingdom. We are arriving at a situation where the sovereign power is a signatory to an empty nuclear treaty that prohibits the stationing of nuclear weapons anywhere within the ambit of the countries that are signatory to that treaty. How could we even use this base for our nuclear submarines?

[Priti Patel]

The hon. and learned Member is absolutely right. That is why it was important to have a debate on the Floor of the House when the treaty came together, but we did not have one. The treaty brings into question everything about security, including our ability to be as strong and secure as we need to be.

It will come as no surprise to Members to hear that now that our sovereignty over the base is being surrendered, our enemies are queuing up to—guess what?—make friends with Mauritius. Just days before the surrender treaty was signed, Russia agreed a new partnership agreement with Mauritius that includes marine research. That so-called “marine research” conducted by Russia could take place just a handful of miles away from our base. Mauritius has also been courted extensively by Iran and China for further partnerships in a range of other areas. Despite the warnings, this inept Labour Government have failed to act to safeguard our interests.