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Diego Garcia: Military Bases

Asked by James CartlidgeConservativeMinistry of DefenceTabled Answered 12 June 2025UIN 57305

The question

To ask the Secretary of State for Defence, with reference to Annex 1, Clause 3, of the UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia [CS Mauritius No.1/2025], whether any States, excluding the United States of America, will operate alongside the UK on the Diego Garcia military base.

Answered by Luke Pollard

Annex 1, paragraph 1 of the Treaty confirms that the United Kingdom will have unrestricted ability to control the deployment of any military, civilian and contract personnel to Diego Garcia. Annex 1, paragraph 3 of the Treaty states that for the Chagos Archipelago beyond Diego Garcia, states operating with the UK and US will also have unrestricted rights, save for overflight or undersea access which require prior notification to Mauritius. We will overall retain the ability to collaborate with our allies through the base on Diego Garcia.

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