This is the original clock at Carnforth Railway Station that was used in the shooting of the film "Brief Encounter" in 1945. "Brief Encounter" was originally a half hour stage play, called "Still Life", written by Noel Coward, but, under the Direction of David Lean, it was re-written, re-named and starring Celia Johnson and Trevor Howard.
By 1944 the main air raid danger to London, came from V1 and V2 rockets, which had no particular targets, but were just aimed generally at London. In July 1944 a mass evacuation had been ordered, and the LMS moved its office staff. The "Brief Encounter" production had originally been assigned a London station to film at, but Carnforth was considered to be safer.
The Ministry of War Transport considered Carnforth to be sufficiently far from London to be safe from attack, even with all the film lights.
For more info see, http://home.clara.net/gw0hqd/brief/index.htm
The mechanical inside of the clock was removed and sold when it was changed to an electrical movement.
During filming the clock face was covered with a face painted on canvas with hands that could be moved to show the passing of time that was obviously much less than the actual time taken to set up for each shot.
