Spanish nationality from the UK: keeping it if you become British
This is the procedure that costs Spaniards in the UK their nationality without them noticing: a Spaniard who becomes British loses Spanish nationality unless they declare, within three years, that they wish to keep it.
The clock starts the day you acquire British nationality, or the day you come of age if you acquired it as a minor.
Why the UK is affected
The rule exempts Spaniards by origin who take the nationality of Ibero-American countries, Andorra, the Philippines, Equatorial Guinea, Portugal or France. The United Kingdom is not on that list, so the declaration is needed.
There is a second case, common among families settled here: Spaniards born and living abroad, children of Spaniards also born abroad, to whom the country they live in gave its nationality while they were minors. They also have to declare that they wish to keep Spanish nationality.
Express and tacit
The express route is the declaration before the consular Civil Registry. The tacit one can come from acts that involve exercising rights or duties as a Spaniard, but the consulate decides whether they count. Do not rely on it: the express declaration is the one nobody can dispute.
| Item | Detail |
|---|---|
| Deadline to keep it | 3 years from British nationality |
| UK exempt | no |
| In London | by post, then signing by appointment |
| Democratic Memory Law | closed 22 Oct 2025 |
- Nationality conservation form, signed
- Valid Spanish DNI or passport
- Document proving British nationality and its date
- The originals of everything you sent, on the day of signing
How it is done in London
The form and the documents are sent by post to the consular Civil Registry at 20 Draycott Place. The consulate reviews them and contacts you to set an appointment to sign the conservation record, to which you bring the originals of everything you sent and a valid Spanish DNI or passport.
If the three years have passed
Then it is no longer conservation but recovery, a different declaration. One of its conditions, legal residence in Spain, does not apply to emigrants or their children.
And one closed door: the Democratic Memory Law stopped taking appointment requests on 22 October 2025. Only those who asked in time and received credentials can still book.
The three years run from the day you become British, not from when you are told.Related guides
Checked against the official pages on 10 November 2026.
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The information comes from official sources that sometimes disagree with one another, and it is reviewed regularly. Confirm before you travel.