Today, little evidence remains of Rediffusion and it's Cable Distribution and Television Rental business. However, their covers can still be seen in various pavements throughout St Helens.
Rediffusion was a television and radio network that was prior to the emergence of cable.
The company was formed in 1931 and was broken up in the 1980's. It appears from my reading that some aspects of the company went to Granada.
Contributed greatly to armchair culture.