Tears, rips, burning, bite marks, writing or drawings are only problematic if they are on pages over that the passport cover and blank visa pages.

However, if there is only slight water damage to the page edges, or if the passport cover and blank visa pages are the only ones that have been affected, you should be okay.

All passport holders must have at least two blank passport pages when they travel, otherwise the document could be seen as invalid.

Brits heading on holidays to the likes of France, Spain, Portugal and Greece need to check their passports including blank pages before heading to the airport ...

Holidaymakers are being urged to check their passport's blank pages or risk being turned away from their destination. Post-Brexit travel now means that UK passports need to be stamped upon entry ...

Not all countries will stamp your passport upon arrival and departure, but many do. This means if you're a traveller with no (or too few) blank pages in your passport, you could be denied entry.

Question: My adult son, traveling with his wife and child, was recently refused permission to board a flight from England to South Africa because he had only one blank page in his passport.

You should be ok if there is only slight water damage to the page edges, or if the passport cover and blank visa pages are the only ones that have been affected.

Make sure you apply online or your bigger passport could cost a whopping £104. And blank pages aren't the only way Brits are being turned away from their flights.

From the number of blank pages to the condition of your passport, we have rounded up some little-known rules that could catch travellers out.

US Officials on the Lookout for ISIS-Made Passports Concern after ISIS overtakes cities with government passport offices.