This was an interesting listen.

https://www.bbc.co.uk/programmes/m001zlz0

Investigative journalist Annabel Deas explores how “Nick”, a former soldier in the British Army, became a people smuggler working with organised crime gangs from Albania and Vietnam based in the UK. He has twice been to prison for his crimes. In this intimate portrait of a British people smuggler - we hear from the perpetrator directly, to uncover his motivations, methods and the consequences of risking the lives of desperate people.

The investigation exposes how the smuggling techniques Nick used are still possible today and details the ease with which smugglers can bring migrants into the UK without being caught. Everyone knows about smugglers who bring migrants in on small boats, but the methods Nick used are rarely heard about. Across the series, he reveals how he illegally smuggled migrants onto cross channel ferries inside cars and lorries, and how he used private marinas to bring migrants into the UK hidden inside a sailboat.