Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Jeremy Corbyn and Jerome Mayhew

Committee of the whole House
Monday 20th October 2025 Commons Chamber

[Jerome Mayhew]

It is for exactly those reasons that we so desperately need new clause 5, which would require an annual security report to the Intelligence and Security Committee. That would mean that we are not caught with our heads in the sand again.

We are beginning to build a picture of a slippery Government who are not being honest with the British people, not being honest about the legal justifications for this deal and not being honest about the security risk associated with the deal, and who are now being slippery about the financial cost as well. Again, the Prime Minister himself said that this slippery deal was going to cost the taxpayer £101 million a year for 99 years. He rounded that down from £10 billion, which my maths would have come to, to £3.4 billion. Through a freedom of information request, the Government Actuary’s Department has confirmed that the actual cost is £34.7 billion. Did the Prime Minister just get the decimal point in the wrong place, or was it something more sinister?

Madam Chair, you could be forgiven for thinking that the Government should no longer be trusted. They are changing their story in relation to this agreement, and they changed their story in relation to the China spy trial collapse. We need new clause 1 so that no payments can be made without direct approval from the House of Commons. At least then the Government would have to explain the real figures and be open to transparency and scrutiny.

The public see through Labour’s deal, and they know a sell-out when they see one. The Opposition amendments and new clauses bring transparency to expose this sell-out from a weak Prime Minister without the backbone to stand up for Britain. No wonder Labour Members are about to vote against them.

[Jeremy Corbyn]

I will be brief, but I am very pleased to be able to speak in this debate as chair of the all-party parliamentary group on the Chagos islands, which last week had its 103rd meeting. It has been ably supported by David Snoxell, the former British high commissioner to Mauritius, who has done incredible work with his knowledge of and empathy for the Chagossian people. There are two former chairs of the group in the Committee at the moment—the hon. Members for Romford (Andrew Rosindell) and for Wythenshawe and Sale East (Mike Kane)—and the former Member for Crawley was also chair of the group at one time.

We founded that group a long time ago to listen to, and take action in support of, the Chagos islanders, who were angry that they had been forcibly removed from their homes, angry at the way they had been treated by successive British Governments, and very angry at the initial decision that was taken and the sheer brutality that went with it. To give Members a brief example, in 1973 a 20-year-old Chagossian woman, Liseby Elysé, while carrying her unborn child, was forcibly removed from the Chagos island of Peros Banhos. She lost her unborn child soon after her traumatic upheaval and the journey, and she and her husband survived with considerable uncertainty and in very precarious living conditions, like all other Chagossians. However, 45 years later, in 2018, she represented her community at The Hague when she spoke about her life and her losses. Her story was compelling and memorable, like those of so many other Chagos islanders, because of the personal horror, trauma and abuse that they suffered. They have always demanded and fought for their right of return, and that is the central core of what the all-party parliamentary group on the Chagos islands has done.

I realise there are now different opinions in the group about the sovereignty or otherwise of the islands, but there has always been a fundamental agreement on the right of return. That led to massive legal actions, which were bravely fought by the Chagos islanders with very little support. There were a few people such as Richard Gifford, their solicitor, who were fantastic in their support. Eventually, we gathered wider support, and we got favourable decisions at all levels of justice around the world, including at the United Nations General Assembly.

It is worth recalling, as many Members have done, the 1965 decision made by Harold Wilson, then Prime Minister. In offering Mauritius its independence, he came to this extraordinarily complicated deal, which essentially involved the United States getting a base on Diego Garcia and, in return, Mauritius getting its independence. Somewhere along the line, as the hon. Member for East Wiltshire (Danny Kruger) pointed out, there would either be a discount on the next generation of nuclear weapons, or free delivery of weapons at some point in the future. A lot of this was shrouded in mystery, in the private conversations between Wilson and Prime Minister Ramgoolam at the time, so there is a lot of confusion surrounding that.

Somewhere at that time the idea was to set up the British Indian Ocean Territory, and somewhere at that time the decision was made that the archipelago—including Peros Banhos, which is a considerable distance from Diego Garcia—would be separated from Mauritius as well and that it would have to be depopulated, hence the utter brutality of the removal of the entire population from the islands. So the question that many Members have brought up is this: should the Chagos islands be separate from Mauritius or part of Mauritius? Interestingly, during the 1965 discussions Mauritius never accepted the separation. It never accepted that the Chagos islands should be separated either constitutionally or in any other way from Mauritius. As we know, the decision was basically forced on the Mauritians in return for their independence.

We now have a situation in which we have finally got a treaty. It has its imperfections—of that everyone is agreed. Personally, I am less than happy about the idea of a massive military base on Diego Garcia, and even less happy that it might be there in 100 years’ time. However, a treaty has been agreed that will ensure the right of Chagos islanders to return to the Chagos islands, but unfortunately only a limited right of return to Diego Garcia itself. I am looking forward to the Minister’s speech, and I would be grateful if was able to say a bit more about the rights of access to Diego Garcia for Chagos islanders, their right to visit the church and the graves of their ancestors, and whether there is some possibility of a degree of residence on Diego Garcia. There is no other place in the world where a military base is surrounded by an entirely depopulated area, in this case an island, and I would be grateful if the Minister was able to say something about that.