大象传媒

For 14 years, Derbyshire police officer Neil Woods lived a very different life.

Most days between 1993 and 2007, Neil would 'dress-down' and head out for a days work, mixing with some of the most violent people in the country.

Our reporter Liam Price has been taken a look at a day in the life of the undercover drug-operative - who's got more than one tale to tell...