What does it take to be an undercover police officer?– podcast

David Taylor began his undercover career targeting small-time drug dealers before going deeper into the world of organised crime. But it ended when he was suddenly pulled from a major investigation and he wants to know why

It's very rare for an undercover police officer to talk about their work. It's a job that combines a knack of assimilating into different characters, winning the trust of people from all walks of life and specifically from the criminal underworld.

David Taylor has chosen to speak to the Guardian because he feels he was unfairly treated when he was abruptly taken off a covert operation. His superiors alleged that he had misbehaved, but he counters that any misdemeanours were trivial.