You can apply to become a British citizen and a British Overseas Territories citizen (BOTC) through this route if you are:

1. a direct descendant of someone who was born on the islands that now form the British Indian Ocean Territory (BIOT)
2. not already a British citizen or a BOTC

If you are an adult (over the age of 18), you will have 5 years from 23 November to apply. If you are a child (under the age of 18), you will have until your 23rd birthday to apply.

The application process is free.

Online application form:

https://www.gov.uk/apply-british-citizenship-person-chagossian-descent

Paper application form:

https://www.gov.uk/government/publications/register-as-a-botc-and-british-citizen-form-biot

Further information:

https://www.gov.uk/government/publications/apply-for-british-citizenship-as-a-person-of-chagossian-descent

Problems and questions:

ChagossianEnquiries@homeoffice.gov.uk  or call +44 (0)300 790 6268 (Option 2) or use +44 (0)203 875 4669.

Further UK Government advice and Frequently Asked Questions

https://www.gov.uk/government/publications/nationality-and-borders-bill-chagossian-nationality-factsheet/update-on-the-proposed-new-route-for-chagossian-to-acquire-british-nationality?fbclid=IwAR2oq6sBWlh23buMrpiM5lEjo6DqFYBA6UmTDc_B-I0OXiUXJQmRAa1z-Mw

Additional information

Following successful application applicants will need to:

1. Apply for a British passport – Current fees for individuals applying for a passport from Mauritius/Seychelles are £86 for an adult and £56 for a child https://www.gov.uk/browse/abroad/passports
2. Attend a citizenship ceremony – a fee may be charged
3. Individuals and family members who do not have British citizenship and who wish to move to the UK will need to follow the existing UK visa rules https://www.gov.uk/uk-family-visa/partner-spouse https://www.gov.uk/government/organisations/uk-visas-and-immigration