Undercover officers identify shops illegally selling knives to children. They expose a car parking scam where vehicles are being left in muddy fields. They crack down on the sale of dangerous skin-whitening creams.
Officers crack down on rogue landlords housing families in squalid conditions. Police track down a con man posing as a collector for a children's cancer charity. Officers set up an online TV programme to name and shame local fly tippers.
Officers go undercover to stop retailers selling acid to teenagers. They also track down crooked lettings agents who are pocketing their tenants' money. Police stop-and-search vehicles suspected of carrying fake goods to car boot sales.
Enforcement officers close a filthy takeaway infested with mice. They also investigate a salmonella outbreak at a wedding. Officers are on the trail of fraudsters targeting people's bank accounts.
Officers crack down on illegal and dangerous vehicles. They also discover an illegal puppy farm in Cannock that is putting profit ahead of care. A rogue kitchen trader that has swindled customers out of thousands of pounds is shut down.
Officers swoop on an illegal sweatshop suspected of being a major supplier of counterfeit clothing and track down a cowboy builder who almost destroyed a family's home. Enforcement agents catch up with a fly-tipping gang.
Officers crack down on coach drivers who are driving when they are too tired. The new technology being used to stop garden sheds being illegally rented out as homes. Plus, two fraudsters running a sim swap scam.
At Felixstowe docks, enforcement agents are on the hunt for counterfeit and dangerous goods. Officers tackle a gang bullying elderly people into having unnecessary building work done and a gang who dumped waste next to a motorway.
Officers in London investigate a tenant sub-letting his council flat. A criminal gang running a multi-million-pound diesel fraud are busted. Over 150 dogs being kept in squalid conditions at an animal centre in Lincolnshire are rescued.
Officers crack down on a callous travel agent that is ripping off British holidaymakers. They also investigate a crooked builder who befriended a pensioner to take his money. In London, DVSA officers spot check luxury limos.