UK BORDER FORCE returns giving a fascinating insight into an unseen world.

This new series revisits the drama of Heathrow Terminal 3 and Calais, and also introduces viewers to new faces in the UK Border Agency’s teams across the country in offices such as Portsmouth and Glasgow, as well as abroad. The cameras also travel to Lagos to show how undercover officers must stop Nigerians trying to board flights to the UK on fake passports, risking their lives on a daily basis.

In this new series we reveal the fascinating journey taken by immigration officers to uncover the biggest visa scam in British history. The UKBA investigation into Univisas unearthed more than 90,000 counterfeit documents which had allowed hundreds of people to cheat UK border controls. Exclusive footage includes the moments officers found hidden documents, stamps and bundles of cash at a house in west London, and the steps then taken to secure conviction.

Away from immigration, we go with the Deep Rummage team who are searching tankers with drug hauls, and customs teams must confront passengers attempting to enter the UK with illegal goods, contraband and products of animal origin.