Following the Speed 20 SA and Speed 20 SB the SC and SD models were introduced: The following galleries contain production data of the Speed 20 types SC and SD from the Model Registers published in the 1980s.
From December 2018 the Albums 1-5 previously lodged in the Herbert have been retrieved and are available at our offices for viewing in hard copy... The scanned photos from Albums 3, 4 and 5 were made available for viewing by Dave Culshaw…