- Offered from the estate of the late Sir Colin Hope who was a former President of the SMMT (1991-93), Trustee of the National Motor Museum (1991-2002), and Patron of the Armstrong Siddeley Heritage Trust from 2011

Introduced in 1921, the Armstrong Siddeley 18hp was a derivative of the marque's first offering - the 30hp - which had debuted some two years earlier. Powered by a smaller 2318cc OHV six-cylinder engine, the newcomer also sat on a shorter 10ft 0in wheelbase but utilised the same 4ft 8in track and suspension layout as its larger sibling. The company made 2,126 examples of the 18hp in its original form. A Mark II version appeared in Autumn 1925 but was heavily revised the following Spring complete with a new chassis and enlarged 2872cc engine. Available in Short and Long guises, the two versions of the updated design differed in terms of wheelbase length and final drive ratio etc. The bigger engine soon attracted the attention of the taxation authorities and thus the 18hp Mark II became the 20hp for the 1927 season. The Short 20hp and Long 20hp remained in production until 1931 by which time a total of 6,641 18hp Mark 2 and 20hp cars had been completed. The Short chassis car was much more popular than the Long 20 and made up three quarters of the total production. The Short-Chassis car was more affordable and would have performed better than the Long-Chassis when fitted with the increasingly popular and heavy saloon coachwork.

Supplied new to the Earl of Duncie, this particular Long 20hp Ascot Tourer entered the late Sir Colin Hope's ownership some seventy-one years later. Self-evidently the subject of much past restoration work, the Armstrong Siddeley was treated to an engine overhaul approximately 10-15 years ago. Little used over the past seven years, it was in running order when photographed during late October 2016 but will require recommissioning prior to road use. The Tourer appears to be complete. The paintwork and interior trim look to be in fair to good order.