UK Border Force

At Terminal 3 Immigration Officer Lisa Lea check the passport of a man from Pakistan who says he's here to do some marketing for his fruit and veg business.

An Indian student is stopped at passport control. He says he's not working but Immigration Officer Neil Newbury finds out he's working at Tesco supermarket stacking shelves.

Street Ops, as they are known, involve a group of immigration officers in full immigration uniform trying to spot illegal immigrants amongst in busy streets.

Immigration Officer Bridgette McCarthy gets a call. There's a lorry with car tires that's about to board a ferry, but they suspect it may also have people hiding deep inside.

A routine passport control check with Immigration Officer Steve Hassler turns into a marathon investigation. The "student" from Pakistan makes a mess of his answers.

A Woman arrives at Heathrow from Cape Town telling IO Lisa Lee she's here for a training course called ‘Steiner'. It's a fabrication.

Dallas Court in Salford is one of 14 reporting centres in Britain where asylum seekers, foreign criminals and those caught working illegally come to make weekly reports.