Written questions

Chagos Islands: Sovereignty

Commons · Question 28799 · Tabled 10 Sep 2026 · Foreign, Commonwealth and Development Office · Official record

Answered 18 Sep 2026

Question

Asked by Alex Burghart

To ask the Secretary of State for Foreign, Commonwealth and Development Affairs, what assessment he has made of the the potential impact of the change in the social time discount rate announced on 7 September 2026 to the total cost of the Chagos deal over

Answer

Answered by Uma Kumaran, 18 Sep 2026

The value of payments under the UK-Mauritius Agreement were set out by the UK government at the time of signature and have not changed. What has changed is the Social Time Preference Rate applied in the calculation of the forecast net present value, which...