Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Lord Purvis of Tweed and Lord Hannan of Kingsclere

Committee stage
Tuesday 18th November 2025 Lords Chamber

[Lord Hannan of Kingsclere (Con)]

My Lords, I will start with the amendment from my noble friend Lord Callanan and the objection to it from the noble Lord, Lord Purvis of Tweed, which was that this wasincompatible with the decision taken by Parliament. I will just quote—because I think it is helpful—Article 18 of the treaty. It states:

“This Agreement shall enter into force on the first day of the first month following the date of receipt of the later note by which the Parties notify each other that they have completed their respective internal requirements and procedures necessary for the entry into force of this Agreement”.


In other words, it cannot enter into force until both Chambers of this Parliament have given their assent.

We have not made any bones about the fact that we do not like the treaty at all. I think it is a bit much to complain about my noble friend making this point in principle.

[Lord Purvis of Tweed (LD)]

The noble Lord will recall that I had said that it is not in force. I said Parliament had ratified it. I am not sure whether the noble Lord can intervene on an intervention, but I am sure he can intervene on his noble friend in just a moment as a proxy to intervene on me. Parliament has ratified the treaty. The treaty is not in force, but treaty-making is a prerogative power, not a parliamentary power. I am sure the noble Lord will agree with that.

[Lord Hannan of Kingsclere (Con)]

I will, of course, invite an intervention. I do not know what the rules are on intervening on an intervention.

--- Later in debate ---

[Lord Purvis of Tweed (LD)]

To clarify: it is the position of the Opposition that the referendum would also be for there to able to be inhabitants on the military base?

[Lord Hannan of Kingsclere (Con)]

My Lords, if I may intervene—

[Lord Purvis of Tweed (LD)]

I am intervening on the noble Baroness. It is her speech.

--- Later in debate ---

[Lord Purvis of Tweed (LD)]

My Lords, it is a pleasure to follow the noble Baroness. She speaks with great sincerity and consistency in making her arguments, and I share many of her thoughts. I said on the earlier group that I am also awaiting the conclusions of the work of the International Relations and Defence Committee. I hope that it will be able to guide us with some of our thinking on this on Report, after its consultations with the community.

Reference has been made to my honourable friends in the House of Commons, who have also for many years been consistent that we should not repeat the history of making decisions on behalf of the community without involving them. It is our long-held view that that is the basis on which we should go forward.

One of the reasons why I intervened on the noble Baroness, and had the interaction with her noble friend, was that there have been some parts of the debate, especially in the House of Commons, where seeking consideration of the right to self-determination has perhaps been used as a bit of a proxy for other considerations, to try either to prevent a treaty or to prevent the restoration of rights. As the noble Lord said on behalf of his noble friend, we seem to be talking about some form of limited sovereignty, some form of limited and partial right to self-determination.

[Lord Hannan of Kingsclere (Con)]

The proposal has come from the Chagossian population. That is what we mean by self-determination. It is not for us to lay down whether they should have full sovereignty or partial sovereignty; it is for us to listen to what they want.

[Lord Purvis of Tweed (LD)]

I agree with that. It is a clearer proposition than we have heard—a better proposition, in my view. Actually, “better” is the wrong word; it is a more convincing proposition because of its origination. The reality of how we define self-determination and the rights of the community—and where I think the debate has bled into previously—is that it has been used without that clarification, as a different political impetus with regard to the overall desirability or otherwise of having a treaty with Mauritius.

That is where I come to it. The most vociferous of speeches that we have heard deny the reality of what happened just last year. We can talk about the denial of rights. If we are talking about referendum statistics, I agree with about 90% of what the noble Baroness, Lady Hoey, said about rights in her speech. But we do not have to go back to the 1960s to look at the denial of rights. It was in January 2024 that the noble Lord, Lord Cameron, as Foreign Secretary, restated government policy that there would be no right of resettlement, and that was while negotiations on the basis of a treaty were carrying on. If it is an argument to suggest that we wish to restore rights of resettlement and rights to self-determination, I accede to that argument. I think it should be in the acknowledgement that the previous Government and this Government refused to do so in the absence of a treaty with Mauritius.

The context that we are in now is that the first opportunity that we may have for limited right of resettlement and acknowledgement of some form of self-determination is by virtue of a treaty. The Minister knows that these Benches do not consider them to go far enough, and we want to use these stages to see how we can go further. But it is worth recognising that the only opportunity that we have for some form of resettlement is by virtue of there being a treaty.