Every rule on this site ends in the same question: can you show it? A count of 89 Schengen days or 440 days outside the UK is a claim until there are dates behind it.
What authorities ask for
It varies, but the pattern is the same. The UK citizenship form asks for your time outside the country, and GOV.UK says to give as much detail as you can using your own records, such as emails or boarding passes. HMRC's residence test turns on day counts that it can adjust, so your count needs dates you can stand behind.
What to keep as you travel
- A list of trips. Country, date in, date out. This is the document everything else supports.
- Boarding passes and tickets. Save the PDF or the email, since paper fades.
- Booking confirmations. Flights, trains, ferries, hotels and rentals all carry dates.
- Passport stamps. Photograph the pages before you renew the passport.
- Anything dated and placed. Card statements, phone bills and work calendars fill gaps.
How to rebuild old trips
- Search your email for airline and booking names, one year at a time.
- Go through your photos by date. Photos taken on a phone usually record when and where.
- Put what you find into one list and mark the gaps.
- Fill the gaps from statements and calendars, and note which dates are certain and which are your best reconstruction.
Keep it in one place
Records scattered across inboxes are hard to produce when a form asks for five years at once. One list, kept as you go, is worth more than a folder of evidence you have to sort later.
In Residency
Residency builds your travel history from your photo library and shows the trips it detected for you to edit or confirm. From then on it keeps the list as you travel.
Updated 11 November 2026.
Questions
How do I prove how many days I spent in a country?
With dated records made at the time: boarding passes, booking emails, passport stamps, and anything else that places you somewhere on a date. Keep them with a list of your trips.
How can I rebuild trips I did not record?
Start from things that carry a date and a place. Booking emails and photos are the richest. Residency reads the dates and places in your photo library and proposes trips for you to confirm.