Derek Williams has appeared on Coronation Street in four roles:
- Supermarket Manager Mr. Jackson in October 1961
- The Restaurant Manager at the Elizabethan Rooms where newlyweds David and Irma Barlow had their reception in December 1965
- A barman at the Robin Hood club named Reg in March 1970
- The Divisional Officer of the Fire Brigade who attempted to rescue Val Barlow in February 1971.
His other credits include Z Cars and Nearest and Dearest.