Diego Garcia Military Base and British Indian Ocean Territory Bill

Andrew Murrison Excerpts

2nd reading
Tuesday 9th September 2025 Commons Chamber

[Luke Pollard]

The deal represents broadly 0.2% of the defence budget. The total deal represents less than the cost of the unusable personal protective equipment acquired by the previous Government and burnt during the first year of the pandemic. A helpful comparator useful for the House to know about is the French base in Djibouti. Recently, France agreed a deal with Djibouti worth €85 million per year to rent a base. Diego Garcia is a larger—15 times larger—more capable and more strategically located military asset and, importantly, it is not next to the Chinese naval base that sits next to the French one in Djibouti. As a comparison, that is useful for people to understand in terms of present value.

[Dr Andrew Murrison (South West Wiltshire) (Con)]

Will the Minister give way?

[Luke Pollard]

I will give way to the former Defence Minister.

[Dr Murrison]

I congratulate the Minister on his promotion, but must say how sorry I am that his first outing has been to defend this load of nonsense. What does he say to the UK Statistics Authority and to the Government Actuary’s Department, which appear to have a very different view of the costing of this to the one that he has just outlined? Is it not the case that what he has said represents a load of accounting double-speak and is dubious, to put it politely and in parliamentary terms?

[Luke Pollard]

That is not quite correct. Indeed, unfortunately, this is not my first outing. My first outing was at Defence questions yesterday, supporting British jobs in the defence sector and celebrating the £10 billion frigate deal that this Government achieved. My second outing was yesterday afternoon with the statement on the defence industrial strategy, making the case for more investment in British businesses. My third outing, though, is here today, securing the most vital military base that the UK and the US operate together. It is absolutely right that, as part of it, we present the costings to Parliament. It is also precisely right that those are reviewed properly by the Government Actuary’s Department and the Office for Budget Responsibility. That has happened, and that is why we have been able to use the figures with certainty. The costings are also entirely consistent with the Green Book.

The Green Book point is a useful one to dwell on for one moment, because if the policy of the Conservative party is not to use Green Book calculations for long-term investments—the same Green Book used for costings of our nuclear deterrent or pensions—I want to understand how much spending the Opposition are now committing to. In how many other examples would the Green Book no longer apply? What are their new accounting principles and what would be the increased cost to the public purse? How many more people will pay increased taxes, because of their disapplication of the Green Book principles? Those are entirely fair questions. The shadow Chancellor, the right hon. Member for Central Devon (Sir Mel Stride), signed the reasoned amendment, so surely he would be able to say how many other areas the Green Book no longer applies to. Perhaps the Opposition Front Benchers will be able to specify any other areas that they no longer believe that the Green Book applies to. We calculated our figures based on the Green Book, and that is why we are confident in them.

--- Later in debate ---

[Luke Pollard]

The Minister of State has met a full range of groups, including the group mentioned by the right hon. Gentleman.

[Dr Murrison]

On that point, will the Minister give way?

[Luke Pollard]

For the last time, and then I need to conclude my remarks.

[Dr Murrison]

The Minister is being extremely generous with his time. He was pressed earlier, but I would like to press him again on the social time discounting method. He should be able to give examples of big projects to which his Government have applied this method. Could he now do that and say why, for example, the right hon. Member for Ashton-under-Lyne (Angela Rayner) did not use that method when she was calculating the cost of the 10-year affordable housing programme?

[Luke Pollard]

I understand the argument that the right hon. Gentleman is trying to make, but I hope that he appreciates my argument that the calculation is based on the OBR’s inflation and deflation figures and on the social time preference rate. It is a figure that has been calculated and supported by the OBR, and it stands up to scrutiny. If Conservative Members are saying that they no longer wish to use the Green Book for calculating long-term investments like this, which is their inferred argument, then it is worth looking at what they are suggesting that we no longer use the Green Book to calculate—they are making an awfully large spending commitment when they suggest that.

--- Later in debate ---

[Priti Patel]

My hon. Friend makes a good point. I have not heard our Five Eyes allies speak about it being a good way of effectively securing any national interest whatsoever—the concept of leasehold is completely wrong.

[Dr Murrison]

The Government are clearly not going to take any lessons from us, but I wonder whether they would listen to one of their own. Lord West of Spithead was a Security Minister under the previous Labour Administration and then First Sea Lord and Chief of the Naval Staff, so he knows a thing or two. He has said very clearly that in his expert opinion, this deal is “irresponsible” and that it will damage our strategic interests. Who are we to believe: the Labour party or my old boss, Lord West?

[Priti Patel]

My right hon. Friend is absolutely right.

There is something fundamental here about the negotiations—I think the Minister alluded to this earlier on. The Government were effectively just listening to leftie lawyers and advisory judgments and acting because they were frightened that their left-wing lawyer friends would pursue even more lawfare against us. The Minister of State, Foreign, Commonwealth and Development Office, the hon. Member for Cardiff South and Penarth (Stephen Doughty) told the Foreign Affairs Committee:

“Our view is that, without this deal, it was inevitable that Mauritius would pursue and secure a legally binding judgment against the UK. Indeed, legally binding provisional measures could also have been secured within weeks”.

The Government have never—not once—detailed what the legal threat is beyond hiding behind spurious aspects of international law.

I have to say that it is a defeatist attitude that Labour has taken. Britain is Europe’s leading defence power, a pillar of NATO in Europe and a P5 member of the UN Security Council with a right of veto. We are not bound by advisory judgments pursued by Mauritius at the ICJ—which, by the way, included a judge who is a member of the Chinese Communist party. By being vocal in conceding defeat and unwilling to defend Britain from a barrage of lawfare, Labour has let Britain’s standing on the world stage plummet, and its decisions will have serious consequences for us.

Let us talk about the money. We all know that this Labour Government are big spenders when it comes to splashing about taxpayers’ money, and the costs of Labour’s surrender treaty are astronomical at £34.7 billion—a figure which, by the way, we had to drag out of the Government Actuary’s Department because Labour Ministers repeatedly refused to disclose the cash payments when asked. In fact, because the payments are linked to inflation, as my hon. Friend the Member for South Northamptonshire (Sarah Bool) has pointed out, guess what? The cash cost could be even higher. That means higher taxes for our constituents, which is nothing for those on the Labour Benches to crow about.

--- Later in debate ---

[Priti Patel]

My hon. Friend is absolutely correct about UNCLOS and in highlighting the insecurities and serious challenges. It may be forthcoming, but at this stage we do not know what levels of protection will be provided or will continue. We do not know what level of resource Mauritius will put into the MPA or what the UK will contribute.

[Dr Murrison]

My right hon. Friend is making a powerful case. The answer is none, because Mauritius has no navy and practically no coastguard. With which means will Mauritius defend a territory that is hundreds of kilometres away? It cannot possibly do so.

[Priti Patel]

My right hon. Friend has summed it up, and it is not just that Mauritius is unable to do so; it clearly will not be interested in this whole area.

It is important for the House to reflect on that point. After decades of investment in and support for the MPA, there is now a major issue of jeopardy. We do not know at this stage what the governance arrangements will be. In fact, in response to questions about that from my hon. Friend the Member for Bognor Regis and Littlehampton (Alison Griffiths) at the Environmental Audit Committee in April, the Minister, Baroness Chapman, said:

“It will belong to the Government of Mauritius, and they will make decisions about how they protect the seas around the Chagos archipelago… You want more detail than we have… We and the Government of Mauritius want to see the marine protected area continue, but I do not know what the precise nature of it will be.”

What we do know is that the Fisheries Minister of Mauritius, Dr Boolell, is eyeing up the marine protected area to exploit it. He boasted to his National Assembly on 7 February that he wants to issue fishing and trawler licences. He declared that

“what stops me tomorrow to say that I am going to give fishing licence for any fishing trawler company or any fishing vessel to go to any part of Chagos”.

This issue has been raised extensively in the Foreign Affairs Committee, with no Minister being able to give any assurances. If the Bill passes and the treaty is implemented, the unique marine environment will be put at risk.

I will briefly touch on two areas. Another part of the Chagos surrender Bill that should concern the House is its Henry VIII clause. Clause 5 grants the Government a free hand, with little or no parliamentary scrutiny, decisions or authority, to

“make any provision that appears to his Majesty to be appropriate as a result of the Treaty”.

That could mean the Government making further concessions to the Government of Mauritius. With the treaty making provision for a joint commission with the UK and Mauritius, that could take place without anyone in this House having any sight or knowledge of it. We need a clear commitment from the Minister in his winding-up speech what those measures will be or will he rule out on the Floor of the House that any further concessions will be made to the Government of Mauritius?

In conclusion, this Bill, its six shameful clauses and the treaty it partly implements are a damning indictment of the failures of this Labour Government. It surrenders sovereignty of a land we own to a foreign Government, increasingly allied and growing closer to countries that are not our allies and which pose the biggest threats to our national security and defence. It binds the hands of British taxpayers into paying £35 billion—a surrender tax. It puts the interests and demands of a foreign country and left-wing lawyers above our national interests. It leaves our country poorer, weaker and less able to defend our interests from foreign threats and it undermines our standing in the world.

Labour’s Chagos surrender deal is an epic failure of diplomacy and an expensive humiliation for Britain. When Labour negotiates, Britain loses. His Majesty’s loyal Opposition will continue to stand up for Britain’s national interests and our defence and security. We will fight for our sovereignty, we will defend British taxpayers by opposing Labour’s surrender tax and, we will make the case for the British Chagossians to have their rights safeguarded and the marine protected area preserved. We will oppose this Bill and fight this treaty every step of the way.