The Bill

Britanniamania (1) Going Underground (17x56)

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When an undercover officer from the Met's Football Intelligence Unit is found stabbed after a football game, Chandler and Ch Insp Morys from FIU send a Sun Hill team to infiltrate Britannia, the hooligan gang responsible, and investigate their leader, a former police sergeant named Julian "The Nap" Napper. Webb goes undercover as builder Mickey Malone, with support from McAllister as his girlfriend, and Riley and Quinnan as his workmates. Webb successfully makes contact with gang member Gary Hughes, and meets Napper when the gang travel north for a game. Keeping a low profile and gathering information, Webb manages to make an ally out of Gary Hughes.