If you think that someone travelling with a stolen passport is going to get stopped and checked, you're wrong.
Interpol are clear that countries aren't doing enough checks against its list of stolen passports. They actually calculate that possibly one billion passengers, last year, were travelling without being properly checked.
Interpol actually says the UK and America are two of the good countries on this but looking at this today, we have found gaps in the UK's checks.
The Home Office told ITV News tonight they only get 90 per cent of the advanced passenger information - that's the information from passports that allows them to check against Interpol's list - so that's ten per cent of passengers that aren't being properly checked before they fly in and out of the UK.
Doing our sums, that could be as many as 20 million passengers a year going in and out of the UK that aren't having proper checks.
The Home Office are clear they want to try and make sure that they can get a better figure and make sure that there aren't 10 per cent of passengers that aren't having their passports properly checked.