Diego Garcia Military Base and British Indian Ocean Territory Bill

Baroness Hoey Excerpts

Committee stage
Tuesday 18th November 2025 Lords Chamber

[Baroness Hoey (Non-Afl)]

My Lords, I very much support the amendment in the name of the noble Lord Lilley. Once again, it raises the issue: why do our Government seem to jump as soon as some international court says something that is not even binding but advisory? The public need to know that we are actually selling out the people of the Chagos Islands because lawyers have decided that an advisory court has said that we should transfer the Chagos Islands to Mauritius. I think the public are beginning to realise more and more that we are being ruled far too much by international law that does not take into account morality to start with, and the rights of people to self-determination. These amendments really do get to the heart of what we are discussing.

I will add my remarks to those of the noble Lord, Lord Grocott. I was very pleased to hear him talk about the way in which the Chagossian people could go back. It is interesting that, over all those years—from the 1960s right through to 2025—the British Governments, who could have allowed the Chagossians to go back, refused. We are now passing them over. We are selling them, buying them and spending a lot of money. Once the islands belong to Mauritius, they will be allowed to be repopulated, except for the island with the base. I absolutely agree that there seems to be no reason why the Chagossians could not live peacefully on part of that island. As the noble Lord said, we have not had any real answer to why that could not happen. British Governments did nothing over those years to allow the Chagossians to go back, but suddenly it is all right, because Mauritius is going to be running it. Of course, in debates on other amendments, we will go into whether we believe that Mauritius will allow the Chagossians to go back, and the way in which it is going to control them.

Clearly, the issue here is self-determination. I know we are coming to that, so I will not say any more now, other than that I would like a response from the Minister that actually answers some of the questions raised in this debate.

[Lord Weir of Ballyholme (DUP)]

My Lords, I will be brief. I was going to intervene on the speech from the noble Lord, Lord Hannan, but we reached a point at which there was a triangulation of interventions such that, for a brief period, perhaps the only person who was unable to contribute to that speech was the noble Lord, Lord Hannan, himself.

If we are to base this decision on where we stand on international law, the Government must explain much more clearly why they believed there was going to be an imminent binding ruling against us. At present, we have simply been served with an advisory position that, by definition, clearly does not hold any legal weight. The noble Lord, Lord Lilley, has highlighted how weak the legal position is and that it would, in effect, be impossible to force us into a binding position. I do not want to reiterate all his points, but I very much support his amendment.

As I think was mentioned earlier by the noble Lord, Lord Hannan, we have heard the opinion given to the Committee on this subject, which, in effect, is an opinion from a third party. It may be a very well-informed third party, but we have not heard directly from the Government themselves. The Government need to explain their opinion. The suspicion of many of us is that that silence—the absence of a watertight explanation from the Government—signals a lack of confidence that this is going to be binding on the UK.

As the noble Lord, Lord Hannan, indicated, in the absence of a binding legal position, we should undoubtedly be looking towards the self-determination of the Chagossian people. Self-determination is more than simply independence, because it is clearly not self-determination if you give people only one choice. Self-determination is about the level of choice, and it is very clear that the Chagossian people want to maintain the link with the UK. At times, the Government, and some Members on Second Reading, disputed that, saying that there are other Chagossian voices who want to go down a different path. There is obviously a very good way to test that out: to pursue the self-determination of the Chagossian people.

The noble Lord, Lord Hannan, noted that part of the complication stems from the fact that, in terms of the hierarchy of principles, we have seen the subjugation of self-determination to signing up to a fashionable support for anticolonialism. The noble Lord may well be right that this is the motivation of some people, but I would contend that some of the nations keenest to jump on the bandwagon of anticolonialism do not have a particularly good record themselves.

China is perhaps the most colonial nation on the face of the earth. It is not the old 19th-century version of sending a gunboat and an invading army; it is a lot more insidious. No nation is more colonial in trying to spread its effective control over a range of third countries. I do not believe that China or many of the other countries lecturing us on this are in a good position to hand out lessons to the United Kingdom. As the noble Lord, Lord Hannan, indicated, we have a much better record on decolonisation. While there have been some problems, the UK does not have in its past an Algeria, an Indochina, a Belgian Congo or even a Mozambique, as other European countries do. Our record is much better.

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[Baroness Meyer (Con)]

Yes, and they seem to approve what we are saying. Basically, these amendments are about asking the Chagossian people about the right to self-determination through a referendum. I have never met a Chagossian in my life, but I have received many letters from them over the past few days and feel that this is my moral duty, and I think that, in good conscience, the Government should allow them self-determination.

[Baroness Hoey (Non-Afl)]

My Lords, I support all the amendments in this group, but I particularly like Amendment 64, because it goes to the heart of the issue and is very simple and straightforward: we want a referendum. I think the noble Lord, Lord Hannan, answered the noble Lord on the Front Bench who asked about what a referendum would mean; I concur exactly with that, and I hope that that has satisfied him.

When we are trying to get an argument for providing the people of the Chagos Islands with self-determination, sometimes it is useful to consider the arguments being put against it. There are two key arguments that the Government seem to deploy for backing the Mauritius treaty and the Bill, rather than a self-determination referendum, the provision of which would be not necessarily easy but technically possible and would include all the Chagossians not just in the UK but around the world.

The Government’s first argument would seem to be that we are excused from the need to provide the Chagossians with self-determination because we removed them from the Chagos Islands and so they can no longer be offered self-determination. So long as the Government say that it was very wrong that the Chagossians were removed, the Government seem to think that the fact that they no longer live on their islands relieves us of the moral obligation to provide them with self-determination on their future. For me, this constitutes a pretty appalling logic that lays bare not only the complete moral failure of the current Government but the deployment of a rather dreadful logic in a way that I believe really lets down the people of our country, the United Kingdom, in a very humiliating fashion.

The Chagossians themselves call this out in a very powerful statement on self-determination, which I am sure the Minister will have read, that they issued yesterday. I am going to quote from it, because I think it is really important. They say:

“In recent years there has been much repenting of colonialism within certain parts of the West, including the United Kingdom. The problem with colonialism is one of alienation. In its conventional form it is problematic because it alienates a people from the dignity of self-government of their home territory, but not from that territory. They can continue to live on the territory that is their home and nurture the hope that at some point they might be afforded the dignity of self-government. The colonialism to which we have been subjected, however, presented a far more extreme and unusual alienation because it alienated us not just from the dignity of a measure of self-government but far more problematically, from our territory, our home, by taking it from us.


If the international community is serious in its commitment to decolonise then it cannot afford to accommodate either alienation. To do so, however, in the context of re-denying”—


I emphasise this—

“the people concerned self-determination while simultaneously paying a country that played a key role in denying that people self-determination in relation to their territory on the previous occasion, more money than is required to resettle the people with the rightful claim to the territory, in order to lease one of their islands, demonstrates extreme moral disorientation.

In this context the policy of the current Government to state that what happened between 1968 and 1973 was deeply wrong but then not lift a finger to put that right, even as they demonstrate that the resources are more than available to do so, not only makes the condemnation of what happened between 1968 and 1973 completely hollow, but also necessarily has the effect of affirming the validity of what happened”.


I think every noble Lord should read that statement carefully; there is more in it.

If we put this another way, attempts by His Majesty’s Government to claim that the United Kingdom is relieved of any obligation to provide the people of the Chagos Islands self-determination in relation to their islands because they are not living there is just another way of saying that we are relieved of the responsibility for having prosecuted the most extreme form of colonialisation because we prosecuted the most extreme form of colonialisation. I think it is plain for all to see that, if we are justifying ourselves in not providing self-determination to the Chagossians—which we would do by at least asking people in a referendum—because we removed them from their islands, we are suggesting that removing them from their islands validates this, as if the crime of their forced removal constitutes a source of validity. Rather than providing a source of validity for not providing self-determination to the people of the Chagos Islands, I believe that this logic lays bare the complete moral failure of the current Government and the way in which it shames us as a nation.

The other argument that the Government provide against affording the Chagossians a self-determination referendum is implicit in their references to Chagossians who support the Mauritius treaty, as if the Chagossians supporting it means that providing the Chagossians self- determination is unnecessary because we already know what they want. I do not doubt that there are some Chagossians, particularly some in Mauritius, who support the Mauritius treaty. There has never been, in my opinion, a self-determination referendum in which 100% of people voted in one way. However, what is incontrovertible is that we have to engage with the fact that not only do we have some 650 Chagossians who have been involved here in the United Kingdom but the survey of over 3,000 Chagossians living in the UK, Mauritius and the Seychelles demonstrates over 99% opposition to being given away—just think about that—to the Republic of Mauritius and support for self-determination as a resettled British overseas territory such as Anguilla or Montserrat. That is 99%. They do not want to be given away to Mauritius; they want to stay British.

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[Baroness Foster of Aghadrumsee (Non-Afl)]

Yes. I am not speaking about Henry; the noble Lord is absolutely right. I shared a platform with him at a Chagossian event a number of months ago. However, this is direct testimony from my Chagossian friends, who have been very clear about a number of MPs whom they contacted, and they were not listened to and were refused a meeting.

Treating our fellow Britons—that is how I see my Chagossian friends—with dignity and addressing their needs are very important. It certainly does not mean that we are challenging national security issues. The two can and should exist together. Just because we have a marvellous asset in Diego Garcia—I am not suggesting otherwise—for our national security needs and those of our friends and colleagues in the United States of America does not mean that we cannot also have a conversation with Chagossian people about their rights, aspirations and needs. The two can and should exist together.

I have already mentioned that the KPMG report of 2015 on the feasibility of the resettlement of BIOT indicated that

“there are no fundamental legal obstacles that would prevent a resettlement of BIOT to go ahead”.

Of course, that is what the Government of the day should have done. They decided not to, citing cost concerns, but how cost effective and value for money does that not look today when we consider the costs of this treaty and the money that we are going to be sending to the Mauritian Government?

Despite what previous Mauritian Administrations have said, the Chagos people are a distinct people on the basis of ethnicity, culture and religion and should be afforded respect by being asked how they view the transfer of sovereignty of their homeland. If this Government turn their face, as it appears they will, against a referendum, they should pay heed to the referendum carried out by the BIOT citizens, which many friends and colleagues in the House have referred to, because that shows a staggering 99.2% of Chagossians who were polled supporting UK sovereignty over the Chagos Islands.

Chagossians have had to resort to press releases and court challenges to be heard, and it is now long past the time for the Government to step back and put in place a referendum to listen to their voices.

[Baroness Hoey (Non-Afl)]

The noble Baroness said 99.2%—I got it wrong; I said only 99%. Does she think that one of the reasons, or perhaps the reason, that the Government will not even contemplate a referendum of the Chagossian people is that they know that they would get the wrong answer and therefore they would be even more morally bound to tear up this Bill and the treaty?

[Baroness Foster of Aghadrumsee (Non-Afl)]

I pay tribute to my friends in the Chagossian community for raising their voices, which have been very loud. As I said, they have had to find other means by which to raise their voices, whether that be through court challenges or press releases.

I think the Government are well aware of how a number of Chagossians here feel about this. As my noble friend has already alluded to, we have heard that there are Mauritians who are in favour of this deal. I have no doubt that there are those from a Chagos background living in Mauritius now who are in favour of the deal—that is accepted—but I believe that the greater number of those Chagossians want to remain British citizens.

I also support Amendment 37 in the name of the noble Lord, Lord McCrea of Magherafelt and Cookstown, which, as an alternative to a referendum, asks for a Chagossian representative to liaise with Parliament. I know that other later amendments coming up, including from the noble Lord, Lord Purvis, look at ways to be creative about hearing the voice of Chagossians. I commend the noble Lord, Lord McCrea, on mentioning individual names. We are talking about communities but, actually, these are individuals who feel very passionately about their homeland; it is important that we remember that.

Finally, Amendment 49 seeks an assessment of Chagossian civic identity and self-determination, again seeking to underline the distinct nature of the Chagossian people. I support that amendment as well. This has been a good debate but, for me, it is really important to listen to the voices of the Chagossian people.

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[Baroness Hoey (Non-Afl)]

My Lords, I will speak to my Amendments 45, 46, and 48. Following on from the noble Lord, Lord Hannan, these are measures that would in some way perhaps help to make the Chagossian people feel that we had listened to their genuine concerns. Now, all of us who have been involved with the Chagossians have been seeing a lot of very written and spoken letters and speeches about what they went through, and why these amendments in particular would be something that could move things forward for them. In particular, 95 Chagossians have written who were born on the islands and are here. These are men and women who lived very peaceful, self-sufficient lives on the islands, including Diego Garcia, until the day they were forced on to the ships and told they would never see their homeland again.

It is important that we—for the public out there who perhaps have not grasped the detail of this—just repeat some of the things that they have said and why these amendments might make a slight difference. They all tell the same story. They describe being ordered to leave their homes with only what they could carry. Some recall arriving at the jetty to see their dogs and livestock taken from them and killed before they were pushed on to the ship. Others remember family members separated, possessions thrown into the sea and the moment the islands disappeared over the horizon: as one said, “The day the world went dark”. One native islander, now in her 70s, said, “We left our islands with nothing but our clothes. They took our dogs from us, howling. We were pushed onto the boat and told we would never return. Our children and grandchildren still do not have the documents that say who we really are”. Another said, “They took my home and now they take my identity. My passport says nothing of where I come from. We want to remain British with the right to return to our islands. We do not want to become Mauritian”.

I should add that Chagossians living in Mauritius report that, more recently, Mauritian authorities have already begun to replace their recorded place of birth—changing it to simply “Mauritius”—and in some cases their birth dates. So their birthplace, their identity and their history are being administratively erased.

Amendment 45 is on passports and official documentation. Chagossians have lived for a long time without anything that really recognises their origins, because their birthplace was depopulated, renamed and reclassified: in administrative terms, their existence as a people was largely erased. This amendment ensures that Chagossians can hold passports and documents affirming their historic identity and their connection to the Chagos Archipelago and the British Indian Ocean Territory. That identity, let us not forget, was never surrendered voluntarily. It was severed by force. As another Chagossian said, “We want the papers that say who we are. We are Chagossians from the Chagos. That must not be erased”. Yet under Clauses 2 to 4, if they are passed unamended, the United Kingdom would relinquish sovereignty over every island except Diego Garcia, and the legal foundation for recognising Chagossian identity through official documentation would disappear. This amendment helps with that.

Amendment 46 is about citizenship rights for children. Exile produced a citizenship gap that now affects three generations. Had the Chagossians remained on their islands, their children would automatically hold British Overseas Territory citizenship today. But exile broke that line, leaving many Chagossian families undocumented or semi-stateless for decades. This amendment would restore what displacement interrupted: automatic BOTC and BIOT citizenship for children born in the United Kingdom to Chagossian parents. As another native Chagossian wrote, “My children were born here but they do not have the citizenship I would have given them if I had been allowed to live in my home. This is injustice continuing to the next generation”.

Amendment 48 is on the retention of BOTC passports. Many Chagossians still hold a BOTC passport showing that they have a connection to the British Indian Ocean Territory. These are probably among their most treasured possessions because, for many, they are the only official recognition that they belong to those islands. If BIOT is dissolved for all islands except Diego Garcia, these passports will not be renewable and Chagossian identity will disappear again on paper. Ms Colin, one of the Chagossians, wrote, “Do not take our passports from us again. We lost our homes. Must we also lose our true identity?” This amendment would prevent that second erasure.

The legal position is even more troubling, although I have gone on a great deal about the moral one, which I think is hugely important. Nothing in the treaty with Mauritius, international law or the British Nationality Act requires these nationality rights to be removed. The Government are removing them by choice, not necessity. In Section 17H of the British Nationality Act 1981, inserted in 2022, a person with a Chagossian ancestor has the right to be registered as a BOTC and therefore as a British citizen. The connection that matters in law is historic, whether the ancestor was born in the British Indian Ocean Territory or the islands designated as BIOT in 1965. Whether BIOT exists today is irrelevant. Its abolition does not legally require the abolition of Chagossian nationality rights. Only repealing Section 17H does that, and this Bill repeals it.

This has never happened before. There is no precedent in British nationality law for stripping a people of British nationality status when their territory is transferred. In every previous case, from Kenya in 1963 to Saint Kitts and Nevis in 1983, people lost British territorial citizenship only because they gained a new citizenship of their own independent territory. Chagossians have no such citizenship to inherit. Had the transfer of the islands occurred after the registration window opened in 2022, the handover would have had no impact on Chagossian nationality rights. Their status and their ability to transmit it to their children would have remained intact.

The Government’s justification that BOTC is tied to a continuing connection with a British territory is incompatible with the very reason Section 17H was created. The purpose of that section was historical restitution, recognising that exile unjustly prevented Chagossians passing citizenship to their children. That injustice has not been remedied simply because the territory is being transferred.

The International Court of Justice made it clear in 2019 that the people of a non-self-governing territory must be consulted and that their freely expressed and genuine will must determine their future. That did not happen in 1965, and it is not happening now. Mauritius speaks of completing decolonialisation, yet ignores the fundamental principle of decolonialisation, which is the right of the people of the territory concerned to self-determination. The people of the Chagos Archipelago, the only people ever to live there, have not been consulted. They have not been given a referendum. They have expressed overwhelmingly that they do not wish their identity, their citizenship rights or their homeland to be handed over without their consent. As one native islander, Mr Joseph Elyse, wrote:

“We want to be recognised as a people before it is too late. Every year more of us natives pass away. We want our rights returned while we are still alive”.


These amendments do not seek advantage; they seek restoration. They would not create extraordinary rights; they would correct extraordinary wrongs. They would ensure that a people removed from their territory in circumstances now acknowledged by everyone as unjust is not erased again through the disappearance of its legal status, documentation and citizenship.

Many of the 95 surviving native islanders were children when they were taken from their homes. Some have died without justice. Those who remain ask for something profoundly simple: “Let the world know who we are, let our children have what was taken from us and let us be Chagossians in law as well as memory”. This House should honour that request. I therefore commend Amendments 45, 46 and 48 to the Committee, and urge noble Lords to support them.

[Lord Callanan (Con)]

I thank my noble friend Lord Hannan of Kingsclere for moving Amendment 3 on behalf of the noble Lord, Lord Morrow. We all hope his family member gets well soon. I also thank the noble Baroness, Lady Hoey, for her very powerful speech.

These amendments all touch on the impact that the Bill will have on the citizenship rights of Chagossians. Clause 4 will limit the rights of those descended from Chagos Islanders to gain British citizenship, in several ways. My amendments in this group also seek to challenge the Government’s approach. It should be noted that settlement in the UK is not what many Chagossians want. Many want to return to the archipelago, and this is something that Ministers have discussed previously. That said, British citizenship should be an option for the Chagossians given the responsibility that I think everybody here believes that we owe them thanks to our historic links and, I am afraid, our record of mistreating their community.

My Amendment 7 would prevent the citizenship provisions coming into effect with the treaty, allowing more time for the Government to consider their approach in domestic law alongside the treaty. It might also allow for greater consultation of the Chagossian community, who are ultimately the people who will be affected by Clause 4. In her reply can the Minister confirm whether the Government have had any conversations with Chagossians about the effect of Clause 4? Can she confirm whether substantive discussions on citizenship rights have been held with the Chagossian contact group, which she claims to have met on a couple of occasions? What was the outcome of those discussions? I would also like to know whether Ministers have made any changes to their plans on citizenship rights as a result of some of the concerns raised by the Chagossian community.

My Amendment 39 probes the limitation of citizenship rights by birth year. Will the Minister please explain why 2027 has been chosen as the cut-off date? What opportunity will there be for the Chagossian community to make a case for its extension, should circumstances require it? Another important issue with any cut-off date for applications is communication. Have Ministers given any consideration to the procedure that should be followed to ensure that eligible Chagossians are contacted about their rights?

I have tabled Amendment 40 to probe the requirement that a person must not have previously held British citizenship to be eligible under the changes made by Clause 4. We can understand why it would not be appropriate for a person who has had their citizenship revoked not to be eligible, but why should a person who has given up their citizenship voluntarily be barred by this clause? I hope the Minister will be able to address these questions.