Question to the Foreign, Commonwealth & Development Office:

To ask the Secretary of State for Foreign, Commonwealth and Development Affairs, with reference to Annex IV of the UK-Mauritius agreement concerning the Chagos Archipelago including Diego Garcia, published on 22 May 2025, what estimate he has made of the average annual cost to the public purse of legal cases heard through the arbitration mechanism; and whether he has had discussions with (a) UK and (b) other lawyers on joining the tribunal.

Details of the arbitration mechanism, including the identities of arbitrators, will be agreed with Mauritius through the Joint Commission.