Written questions by Francois.

With reference to paragraph 7 of Annex 1 of the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), what mechanism his Department will use to notify the Government of Mauritius of ongoing activities in the Chagos Archipelago as defined in paragraph 11(b) of the Agreement that risk conflicting with the long-term, secure and effective operation of Naval Support Facility Diego Garcia.

A Joint Commission will oversee the implementation of the treaty and will discuss issues relating to the effective operation of the base on Diego Garcia.

With reference to Article 6 of the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), what steps he will take to ensure the resettlement programme does not impact the security of operations at Naval Support Facility Diego Garcia.

Under the treaty, Mauritius will have the ability to conduct resettlement on any island in the Chagos Archipelago other than Diego Garcia. The UK has no intention of constraining resettlement activity, but has negotiated an effective veto over any activity that presents a clear and direct threat to the base on Diego Garcia.

With reference to paragraph 3(e) of Annex 1 of the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), what steps his Department is planning to ensure the departure of any security force from the Chagos Archipelago whose continued presence is not agreed under paragraph 3(d).

The Treaty clearly states a strict prohibition on foreign security forces operating in the Chagos Archipelago without UK consent. If a security force is operating in the Chagos Archipelago without the joint agreement of the UK and Mauritius, we will cooperate as necessary, to prevent or otherwise bring to an end such activity.

With reference to Article 2(3)(g) of the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), what steps his Department is taking to ensure that military operations in Diego Garcia as defined in Article 19 of the Agreement are not impeded by compliance with the environmental laws of the Government of Mauritius.

The United Kingdom is not bound by Mauritian environmental law. Under Article 5, the UK will apply applicable international environmental law with due regard to applicable Mauritian environmental laws; this reflects the long-standing Defence policy of applying both our own and our host nations’ environmental standards so far as it is reasonably practicable.

Commonwealth and Development Affairs, with reference to the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), what steps he has taken to protect the UK from legal claims having recognised the wrongs of the past in the preamble to that Agreement.

This government and previous governments have repeatedly stated we deeply regret the way Chagossians were removed from the Islands. The UK provided compensation in the 1980s that courts have ruled was paid in full and final settlement. The Agreement will increase support to Chagossian communities. The Agreement also provides that it constitutes full and final settlement of all claims by Mauritius in relation to the Chagos Archipelago.There are no provisions within the treaty for Mauritian officials to be based on Diego Garcia, however Mauritians can work on Diego Garcia, subject to appropriate security protocols.

Whether the costs for the UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia [CS Mauritius No.1/2025] are accounted for under his Department's Resource Departmental Expenditure Limit; and what estimate he has made of the potential impact of these costs on (a) his Department's operational budget and (b) the Government’s commitment to increase defence spending to 2.5% of GDP by April 2027.

These are being considered as part of the wider Government engagement on the second phase of the Spending Review, which concludes on 11 June 2025.

Whether the findings of the investigation into unauthorised social media use by a British Army regiment will be made publicly available.

The Army has investigated a number of social media posts which were published in error and without correct authorisation. Those posts have been removed and updated guidance has been issued to Regimental HQs on the appropriate use of regimental websites and social media pages. This work has been conducted as part of Army routine business, with no additional costs incurred.

What the terms of reference are for the investigation into unauthorised social media posts by a British Army regiment.

The Army has investigated a number of social media posts which were published in error and without correct authorisation. Those posts have been removed and updated guidance has been issued to Regimental HQs on the appropriate use of regimental websites and social media pages. This work has been conducted as part of Army routine business, with no additional costs incurred.

What estimate he has made of the cost of the investigation into unauthorised social media use by a British Army regiment.

The Army has investigated a number of social media posts which were published in error and without correct authorisation. Those posts have been removed and updated guidance has been issued to Regimental HQs on the appropriate use of regimental websites and social media pages. This work has been conducted as part of Army routine business, with no additional costs incurred.

Who is leading the investigation into unauthorised social media use by a British Army regiment.

The Army has investigated a number of social media posts which were published in error and without correct authorisation. Those posts have been removed and updated guidance has been issued to Regimental HQs on the appropriate use of regimental websites and social media pages. This work has been conducted as part of Army routine business, with no additional costs incurred.

What his planned timeline is for concluding the investigation into unauthorised social media use by a British Army regiment; and whether he plans to make a Statement to Parliament on the findings of the investigation.

The Army has investigated a number of social media posts which were published in error and without correct authorisation. Those posts have been removed and updated guidance has been issued to Regimental HQs on the appropriate use of regimental websites and social media pages. This work has been conducted as part of Army routine business, with no additional costs incurred.

Commonwealth and Development Affairs, whether the UK-Mauritius Treaty on the sovereignty of the Chagos Islands will be signed before the House rises for summer recess.

The Treaty was signed on 22 May and secures the long-term operation of the UK-US military base on Diego Garcia. A copy of the Treaty was deposited in the House and can be found at the following link - https://www.gov.uk/government/publications/ukmauritius-agreement-concerning-the-chagos-archipelago-including-diego-garcia-cs-mauritius-no12025.

What steps his Department is taking to ensure that (a) Gerry Adams and (b) others interned without trial in the 1970s do not receive compensation following the proposed repeal of sections 46 and 47 of the Northern Ireland Troubles (Legacy and Reconciliation) Act 2023.

This is an issue that the previous Government failed to adequately address following the 2020 Supreme Court judgment in Adams. Its belated attempt to do so via an amendment to the Legacy Act has been found by the Northern Ireland courts to be unlawful. The Government is carefully exploring how to lawfully address this complex issue alongside our clear commitment to implement legacy mechanisms that are fully compliant with human rights.

What the cost is of the Crye Precision uniform programme; and whether a replacement combat uniform programme is planned.

The Royal Navy have spent £15.803 million to date regarding the total procurement of Crye Precision uniforms. A future uniform programme is in development.

What budget has been allocated to Project Eve; what the (a) current and (b) anticipated future spend are for that project; and what steps he is taking to ensure interoperability with the (i) Army’s and (ii) Royal Navy’s communications systems.

As part of the Commando Force (CF) Programme, £99.78 million has been spent on spiral development and fielding of the EVE digital backbone capability. A further £56 million budget for EVE is approved as future spend, to enable interoperable development and scaling to Littoral Strike Group level by December 2030. EVE, developed by the Royal Navy, has been a pathfinder in Defence digital innovation. EVE has been fielded by the Army’s Very High Readiness forces, as part of the Land Environment Tactical Communications and Information Systems programme. EVE is an integral part of the wider Royal Navy Strike Network design.

What the cost is of the L129A1 Sharpshooter Rifle programme for the Royal Marines; and whether additional costs have been incurred due to the adoption of the 6.5mm Creedmoor calibre.

The L129A1 is provided to the Royal Marines from the Army, via Defence Equipment and Support, as part of the Lead Command Model. The total cost to Defence was £1.5 million. Additional costs have been incurred for Creedmoor as the transition to this calibre has not commenced yet.

What is the total cost of the Royal Marines’ Knights Armament Stoner 1 (KS-1) rifle programme, including (a) optical and thermal sights and suppressors and (b) all associated equipment; and how much of this budget has been spent to date.

The Knight Stoner KS-1 has been procured by Royal Navy as part of the Future Commando Force Transformation. The total cost of this rifle to the Programme is £30.422 million, of which, £22.887 million has been spent to date.

How much was spent on the First Sea Lord's Sea Power Conference 2025.

The Royal Navy allocated £38,000 of funding for the First Sea Lord's Sea Power Conference 2025. This money has not been spent and will be utilised when the conference is re-scheduled.

Pursuant to the Answer of 7 May 2025 to Question 49322 on Boeing E-7, what further test flights are planned for the first E-7 Wedgetail aircraft before it enters its test and evaluation phase.

The Wedgetail programme has already entered the flight test programme and has completed three flights. There is a comprehensive ground and flight test programme in 2025 prior to the aircraft being handed over to the Royal Air Force, the exact number of which depends upon the success of each flight.

How much funding his Department provided for the First Sea Lord's Sea Power Conference 2024.

Funding for the First Sea Lord’s Sea Power Conference 2024 was £38,000.