Naturalisation: do you upload all pages of your British spouse's passport, or just the bio page?

Short answer: you do not need every page. To naturalise on the spouse route, you must prove your husband or wife is a British citizen, and that is established by the personal-details (bio/photo) page of their current British passport — the page that shows their name, photograph, nationality and the document's validity. The stamped travel pages are not what proves nationality, so a full page-by-page scan is not required. Uploading the whole passport does no harm, but the bio page is the essential item.

What GOV.UK actually asks for

The Home Office's Guide AN naturalisation booklet sets out the requirement plainly. For applications made as the spouse or civil partner of a British citizen (section 6(2) of the British Nationality Act 1981), it states you must "provide your spouse's or civil partner's current passport or naturalisation/registration certificate showing that they are a British citizen, as well as the marriage certificate or civil partnership certificate."

Notice what the wording is doing. The document has to show that they are a British citizen. That is the function of the personal-details page, where nationality is printed. The guidance does not ask for every stamped page, and it does not ask for a record of their journeys — because their travel history is irrelevant to whether they hold British nationality.

Bio page versus all pages

The confusion usually comes from mixing up two different passports in the application.

Your own passport is used to evidence your lawful residence and absences over the qualifying period, so the historical entry/exit stamps can matter there. Your spouse's passport is doing a completely different job: it only needs to prove their nationality. For that single purpose, the bio page is what counts.

If you want to be thorough, upload the bio page plus any page that confirms the passport is current and valid — the front cover or the page showing the expiry date. That covers "current" and "shows they are a British citizen" without scanning forty blank pages.

If your spouse was not born British

If your partner became British by naturalisation or registration rather than birth, you can use their naturalisation or registration certificate instead of, or alongside, their passport. Either route satisfies the same requirement: proof that they hold British citizenship today. This is useful if their passport has expired but their certificate is to hand.

How the documents reach the Home Office

For the modern online application you do not post originals. You upload clear scans or photos of your evidence to your application account, then your original passport is checked at your biometric appointment. If you are following the older paper Form AN route (used from the Channel Islands, Isle of Man, British Overseas Territories, or by post), the same logic applies: send a copy of the page that proves your spouse's British nationality.

For more on the upload-versus-original distinction, see our guide to whether you upload your passport copy or bring the original to your appointment. It is a common source of mix-ups, and the two steps serve different purposes.

A quick note on the rest of your checklist

Proving your spouse's nationality is only one item. On the spouse route you also need to evidence three years' lawful residence, your indefinite leave to remain or settled status, a passed Life in the UK test, and approved English language proof — and you will name two referees who confirm your identity. If you are still lining up who can vouch for you, read our guide to referees for British citizenship before you submit.

Get the British-partner evidence right at the start and you remove one of the most common reasons an application gets queried.

This is general information, not legal advice. Immigration rules change and the online application's prompts are the authoritative checklist for your case — always rely on GOV.UK and the instructions inside your own application.