This is the shocking moment police in South Mimms, north of London, cracked open a locked car roof box at a service station and discovered a stowaway hiding inside.

A British family were returning from a trip abroad and stopped in Calais where it is thought the man climbed inside the roof box.

Unaware the family drove off and it wasn't until they were parked up off the M25 at least a day later he was found.

The family popped into the service station prompting the man to "bang and shout" until worried onlookers called the police.

This footage was filmed on February 23.

This is the shocking moment police cracked open a locked car roof box at a service station - and discovered a stowaway hiding inside.

A British family were returning from a trip abroad and stopped in Calais where it is thought the man climbed inside the roof box.

Unaware the family drove off and it wasn't until they were parked up off the M25 at least a day later he was found.

The family popped into the service station prompting the man to "bang and shout" until worried onlookers called the police.