We believe this knife was made in Sheffield for Read & Elvidge, a wholesaler originally based in London. REDGE was their trademark.
The company was in existence between 1958 and 1997 and was latterly based in Trowbridge, Wiltshire. It was registered as a wholesaler of household goods, including china and wallpaper (and presumably cutlery).
With thanks to Alastair Fisher of Taylor's Eye Witness Ltd for providing this information.
If you have any further information about the knife or the maker, pl....