Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Lord Beamish and Lord Weir of Ballyholme

Committee stage
Tuesday 25th November 2025 Lords Chamber

[Lord Weir of Ballyholme (DUP)]

My Lords, I rise to deal with Amendments 58, 61 and 62, which are, largely speaking, probing amendments.

My noble friend Lord Morrow raised the question of whether the Government have breached their manifesto; far be it from me to suggest that. There are even some scurrilous rumours that they will raise taxes, but that will clearly not be the case, and such rumours will obviously be disproved in the next few hours.

I and others have been very critical of the deal, the legislation and the approach that has been taken by the Government. We have been critical of the treatment of the Chagossian people on issues such as the right to self-determination and the ceding of sovereignty. It seems to me that the response that the Government will offer as a rationale is essentially that, whatever the position on those issues—and I appreciate the Government will dispute the position that I and others have put forward—the outweighing factor is the securing of our strategic defence within the area and, if that is got right, that will trump everything else.

That is why the amendments in this group are so important, as they try to put that to the test. My amendments and, indeed, a number of the others, try to seek assurances. I am using the word “assurances” as I am reminded of a phrase that a friend of mine would use when talking of “clarification”. He would say that the purpose of clarification is often not to make things clear but to put yourself in the clear. Instead, I will ask the Government for assurances on the issue of defence. Is what is being put forward—what is said on the tin—being met by what is delivered in respect of assurances?

As regards the amendments, I want to deal with three issues that are interrelated. First, I want to probe the position as regards the potential. We know what has been secured directly on Diego Garcia itself, but I want to probe on the potential for the Mauritius Government to enter into arrangements with third countries, to have a movement by those countries towards other islands by way of a leasing or some other arrangement, which may then descend into some form of military activity, with monitoring bases and things of that nature.

Earlier today, in answer to an Oral Question, the Minister rightly indicated that it would be wrong to speculate on potential future events. However, this is not an issue that simply appears in a vacuum. We know that the Mauritius Government have had relatively close relationships with Russia, for example, and have been in discussions with India, and that there are ongoing discussions with China. Indeed, it is reported in relation to one of the islands—Peros Banhos, if I am pronouncing that correctly—that there are discussions around a leasing arrangement. It is clear that Mauritius will look towards the Chagos Islands as an opportunity to work with a range of other Governments to lever in what they have been given.

Specifically, the concern is with regard to China. Where arrangements have been made between other jurisdictions and China, they have led, in a military sense, to a level of mission creep. We have seen that these things are beginning to happen. There are a number of examples, from Sri Lanka to Djibouti to the Solomon Islands. We need a belt and braces approach to how we are going to prevent any level of development around that side of things.

I know that the Minister will respond in part by saying that there is provision within the treaty that, should there be any sort of military arrangement, Mauritius would then have to notify the UK Government and that, effectively, the UK Government could say no to such an arrangement. However, there are a couple of concerns in relation to that. Amendment 58 therefore looks to see what practical measures can be taken. We need to flesh out in very clear-cut terms what we can do. The concern, of course, is that any notification by Mauritius might be post the event. We might see a situation in which something is, for example, leased to the Chinese, who then develop their own mission creep. Mauritius could then turn round and say that, “Actually, this has been leased out to them, and we do not know what they are doing, and they have gone beyond that”. We need to tease out from the Government what they intend to do in practice in a situation where, for example, a listening station was placed on one of the islands or there was a range of other realistic possibilities.

[Lord Beamish (Lab)]

What the noble Lord is saying is very interesting, but the treaty protects the outer islands from development. Mauritius is one of only two African countries that is not part of the belt and road initiative, so its main interlocuter is not China but India.

[Lord Weir of Ballyholme (DUP)]

We can pick which Government are looking to lever in additional influence in the area. I am simply saying that China has a particular record of reaching agreements with other countries to—