Based on

Movies like Look at Life: Fire over London (1966)

The film Fire Over London is about the operation of the London Fire Brigade. In an office's switchboard room we see one of the hideous T&N green and ivory telephones supplied by General Telephone Systems. Another shot deep in the bowels of St Paul's Cathedral gives a glimpse of a two-tone grey ATE 'Coffin Phone' as used on Communications Systems private exchange systems.