The FSA, as part of the Play It Safe campaign, is also cracking on unlicensed food vendors, like hot dog, burger and ice-cream vans in London during the Olympics. So much so they've set up huge storage areas in Gatwick, Tilbury and West Drayton to put the confiscated equipment and food. "Anyone who works for the council or the Police will be looking out for illegal traders. If they don't comply with the regulations we have the power to seize the vehicles and food and destroy it as necessary" says Sarah Appleby head of enforcement and local authority delivery at the Food Standards Agency.

It's also warning any Londoner thinking of selling food or drink from their front door for a quick buck, without the proper permission, during the Games, could face jail if caught.

"The biggest penalty is their reputation, loss of food and equipment, but if formal action takes place they could be fined thousands of pounds and it's a criminal prosecution so they will end up with a criminal record and in some cases could even mean a prison sentence