Johnny Allen is a fictional character from the BBC soap opera EastEnders, played by Billy Murray. He first appeared on 4 January 2005 and became the show's primary antagonist until the character was killed off on 20 October 2006.

Walford is a fictional borough of east London in the BBC soap opera EastEnders. It is the primary setting for the soap. EastEnders is filmed at Borehamwood in Hertfordshire, towards the north-west of London. Much of the location work is filmed in nearby Watford, which was chosen for many of the exterior scenes due to its close proximity and the town's name being so similar to Walford. Thus, any stray road signs or advertising boards which are accidentally filmed in the back of shots will appear to read Walford. Locations used in Watford include most interior and exterior church scenes of various churches, the snooker club, the County Court and Magistrates' Courts courtrooms, and the cemetery.