Mark Powley is an English actor who played Johnno Dean from October 2002 to 2003. The role was recast to Colin Wells when the character's duration was extended and Mark was unable to continue in the role due to other commitments.
Mark's other acting credits include The Bill, Emmerdale, Heartbeat, Peak Practice, Coronation Street, New Tricks, Holby City, Inspector Lewis, Casualty, Doctors, Birds of a Feather, Midsomer Murders and Death in Paradise.