The
M.18 Mk.1 was a two-seat tandem training aircraft, powered by a 130 h.p.
de Havilland Gipsy Major which was first flown on 4 December 1938 from
Woodley Aerodrome near Reading by
F.G. Miles. The sole example
G-AFRO was converted to a single seater in 1941, with a fixed
tricycle undercarriage and with the fin and rudder moved forward by 22 in. It later reverted to a tail wheel undercarriage layout and flew during 1946-1947 with its span reduced from 31 ft 0 in to 22 ft 0 in and a 110 h.p.
Jameson FF engine was installed. It was scrapped in December 1947. The
M.18 Mk.2 had the fin and rudder moved forward by 22 in and was fitted with a 150 h.p.
Blackburn Cirrus Major III. The sole example, serial
HM545, first flew at Woodley in November 1939. It was evaluated by the Air Ministry as a possible replacement for the
Miles Magister. According to test pilots, it handled better than the Magister, was impossible to spin and flew well at night. After ownership by several private pilots, it was retired in 1989 and from 1996 to date, the aircraft has been on display at the
National Museum of Flight in Scotland. The
M.18 Mk.3 was fitted with enclosed tandem cockpits and powered by one 150 h.p.
Blackburn Cirrus III. The sole aircraft,
U-0236, first flew at Woodley in October 1942. It was used by Miles for wartime communications as
JN703, before civil sale as
G-AHOA in 1946. It had two private owners before crashing at
Littondale, Yorkshire on 25 May 1950. ==Specifications (M.18 Mk.2)==