The 29-year-old, who played Jamie Baldwin in the ITV1 soap, will appear in the upcoming four-part special 'Gun Runner'.
He will take the role of Kieran Wallace, a dangerous thug who is part of a gun-running gang which Sergeant Smithy (Alex Walkinshaw) must infiltrate in a bid to take guns off the streets.
He said: "It makes a change to play such a vicious character. Alex and I filmed scenes during match day at Millwall Football Club. It was a fantastic opportunity, and called for some complicated filming, but it was a lot of fun."
The episodes see Smithy face his toughest challenge yet when he goes undercover and finds himself challenged at every turn.
'Gun Runner' is due to transmit at the beginning of July 2008.