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Chagos Islands: Sovereignty

Question for Foreign, Commonwealth and Development Office

UIN 62578, tabled on 25 June 2025

To ask the Secretary of State for Foreign, Commonwealth and Development Affairs, which (a) international treaties and (b) obligations will apply to (i) the Chagos Archipelago and (ii) Diego Garcia as a result of the transfer of sovereignty to Mauritius; and if he has undertaken an assessment of the potential impact of those obligations on (A) the Chagos Archipelago and (B) Diego Garcia.

Answered on

3 July 2025

The Treaty ensures that its terms are compatible with the other international obligations of the Parties, current and future. The United Kingdom will ensure all operations on Diego Garcia comply with its obligations under applicable international law.