Shay Doyle is a former British soldier and Greater Manchester Police Level 1 undercover agent. Shay went head-to-head with the UK's most dangerous villains, including Paul Massey and Dale Cregan. Shay joins Crime Redefined to discuss his upcoming book Deep Cover: How I Took Down Britain's Most Dangerous Gangsters. Hosted by Dion Mitchell and Mehul Anjaria. A Zero Cliff Media production. https://vurbl.com/station/crime-redefined/