After a tentative start in the late 1930s, Dawson's Motors Wolverhampton (DMW) commenced production of a range of Villiers-powered lightweights in 1950. The firm built its first competition (trials) models in 1952 and introduced a scrambler a couple of years later. A scooter – the 98cc Bambi – had been added to the range by 1960, but DMW's next offering in this category would be more unusual. First seen in 1961, the Deemster was intended to combine the riding position and handling characteristics of a conventional motorcycle with scooter-type weather protection and enclosure. The Deemster's twin-cylinder Villiers 249cc 2T engine was located centrally, in the motorcycle position, rather than scooter-style at the rear, while the interchangeable wheels were 12" in diameter. Suspension was by leading-link fork at the front, with rubber 'spring' and single hydraulic damper, and by swinging arm at the rear. The frame was made up from a combination of round and square-section tubing to which a large box fabricated box was attached, supporting the seat and rear dampers while providing sufficient luggage space to accommodate two crash helmets. Standard and De Luxe versions were offered, the latter equipped with electric starting. With its tall screen, twin headlamps, generously sized leg shields and voluminous front mudguard, the Deemster was certainly eye-catching. A police version arrived for 1963 and the Deemster continued to be built until the cessation of DMW roadster production in 1966, by which time the Velocette Viceroy engine was being offered alongside the Villiers 4T.

One of only 33 police-specification Deemsters made, this example comes complete with all its related accessories including blue lights, fire extinguisher and a rare Pye 'Westminster' police radio. A potential concours winner, 'JKH 733B' has been on museum display for many years and is described as in generally excellent condition, with fully rebuilt engine. This unusual machine is offered with Swansea V5 registration document.