But did you know that some countries also require you to have two to four blank pages in your passport, too? And we don't mean spaces available on various pages — we mean fully blank pages.

All passport holders must have at least two blank passport pages when they travel, otherwise the document could be seen as invalid, meaning you could be refused entry into the country. READ MORE ...

Most people know to check their passport's expiry date, but there's another rule that many Brits aren't aware of. Anyone jetting off abroad must have at least two empty pages in their passport.