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Written question asked by Lord Lilley (Conservative) on Friday, 21 November 2025, in the House of Lords. It was due for an answer on Friday, 5 December 2025. It was answered by Baroness Chapman of Darlington (Labour) on Tuesday, 2 December 2025 on behalf of the Foreign, Commonwealth and Development Office.


Chagos Islands: Sovereignty

Question

To ask His Majesty's Government whether they will publish the legal advice that ministers received about the right to self-determination in respect of the Chagos Archipelago.

Answer

The Government's position in relation to the UK-Mauritius treaty has been informed by legal advice throughout. A summary of the Government's legal position was set out on 22 May when the treaty was signed, and can be found here: https://www.gov.uk/government/news/uk-secures-future-of-vital-diego-garcia-military-base-to-protect-national-security


Secondary information

Type
Written question
Reference
HL12208
Session
2024-26
Related items
Chagos Islands: USA
Monday, 26 January 2026
Written questions
House of Lords
Subjects
Disclosure of information Legal opinion Sovereignty Chagos Islands
Link
View this Written question on www.parliament.uk