Officers inspect takeaways in Oldham to ensure food is safe, including for those with food allergies. They ensure everyone gets home safely after a Westlife concert in Newcastle and investigate a gold bangle scam in Birmingham.

DVSA officers catch a learner driver using a tiny Bluetooth device to cheat on his theory test. Officers are on the trail of a wealthy businessman selling unlicensed medicines. In Swansea the team crack down on an unscrupulous call centre.

Officers tackle a second-hand car dealer who sold a death-trap to an unsuspecting customer. They crack down on a dodgy driveway company targeting pensioners. They pursue a fish merchant who has been illegally harvesting shellfish.

Fly-tippers are caught red-handed dumping waste at a school for children with special needs. Officers track down a man who sold defective brake parts to motorcyclists. A couple involved in a copycat website scam have their property seized.

Officers uncover a trade in counterfeit airbags. Environmental health officers launch a crackdown on rogue landlords. In Nottingham, there's a race against time to discover the source of an infection that's affected 160 people.

Officers check hygiene in Oxford takeaways. In Studley, they tackle a butcher's shop cheating customers by claiming meat from overseas is British. They take action against a cowboy builder spending customers' money on holidays abroad.

Officers are on the trail of fly-tippers caught on camera dumping waste in the Rhondda Valley. They raid an address in Lincoln where dogs are being kept and trained for illegal dog fighting. They track down an online fraudster.

Officers tackle a water company after sewage pollutes a river. They catch up with the boss of a travel company ripping off holidaymakers. Officers team up with the parents of a girl who died after an allergic reaction to a takeaway meal.

Officers catch up with a fraudster with so many aliases he loses track of who he is supposed to be. They take on a rail company after a boy suffers catastrophic injuries. Officers check retailers selling knives.

Officers search the home of a loan shark and find a safe containing thousands of pounds. They also force a rogue builder to pay compensation to his elderly victims. Officers are on the trail of a drug gang.