The part of Gatwick Airport which is being modelled will feature three signals.
The first signal, T254, was located at the London end of platform 1. This was a controlled signal that had four aspects with a position 4 junction indicator and a position light signal associated with the main aspect.
The second signal, T252 was located at the London end of platform 2. This controlled signal had four aspects with a position four junction indicator unusually located to the right of the signal head. The third signal, T250 was located on the same gantry as signal T252 at the London end of platform 3. This controlled signal had four aspects with a route indicator located to the left of the signal head.
I purchased three, four aspect signals from a company called CR signals which most closely represent the real signals used in the 1990s, the dispatch service was excellent as they arrived the very next day in the post.
Signals T254, T252 and T250 are positioned in place on the layout, this is the view from what would be platform 3 at the real location. The position light signal associated with the main aspect signal T254 has unfortunately come apart but will be stuck back on.