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Chagos Islands: Sovereignty

Asked by Priti PatelConservativeForeign, Commonwealth and Development OfficeTabled Answered 9 June 2025UIN 56193

The question

To ask the Secretary of State for Foreign, Commonwealth and Development Affairs, with reference to paragraphs 1(b)(viii), 2 and 3(a) of Annex 1 of the document entitled UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia (CS Mauritius No.1/2025), if he will set out (a) the process by which the UK will notify the Government of Mauritius, (b) the designated points of contact in the Government of Mauritius to receive such notifications and (c) whether the Agreement binds the Government of Mauritius to keep those notifications confidential.

Answered by Stephen Doughty

There is no notification requirement for UK or US access, basing or over-flights around the base. Agreement to inform a host nation about military action from their territory is standard practice in basing arrangements. Any notification will take place after the event and will not require the UK to divulge sensitive information. Article 3(2) of the treaty clearly states that Mauritius cannot undermine, prejudice or otherwise interfere with the long-term, secure and effective operation of the Base on Diego Garcia, and that Mauritius shall cooperate to that end.

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