UK Parliament · Public Bill · No. 4004
Diego Garcia Military Base and British Indian Ocean Territory Bill
[As Introduced]
A
BILL
to
This bill concerns the UK's sovereignty and administration of the British Indian Ocean Territory (BIOT), which includes Diego Garcia, a strategically important military base used by British and US forces. The bill addresses the legal status of BIOT and potentially responds to international pressure, particularly from Mauritius, which claims sovereignty over the territory. The specific measures would clarify or reaffirm the UK's governmental authority over BIOT and its use for military purposes, though exact provisions depend on the bill's final wording.
Presented by Mr David Lammy
supported by Baroness Chapman of Darlington.
supported by Baroness Chapman of Darlington.
PublicLords
Official Ballot · The People's Chamber
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The people's count175 votes
2% Aye · 398% No · 172
MPs' vote491 MPs
65% Ayes · 32035% Noes · 171
The democratic gap
63% , a wide gap
Outcome mismatch, the public would block this bill, but Parliament passed it.
Bill passage
Commons
- 1st reading15 Jul 2025
- 2nd reading9 Sept 2025
- 3rd reading20 Oct 2025
Lords
- 1st reading21 Oct 2025
- 2nd reading4 Nov 2025
- Committee stage18 Nov 2025
- Report stage5 Jan 2026
- 3rd reading12 Jan 2026
