[2] Work on the Martinet was started in response to the RAF's shortage of obsolete frontline aircraft for target towing duties.

[3] However, while the crucial Battle of Britain was being waged and attrition rates were driven high amongst either side, the RAF found itself with a shortage of frontline aircraft.

[4] Amongst the listed requirements was a stipulation that, in order simplify manufacturing as much as possible, the envisioned aircraft ought maximise the use of standardised components wherever feasible.

[4] Results were satisfactory enough for production to begin immediately, leading to the Martinet rapidly supplanting the Master II on Miles' assembly lines at Woodley.

[3] In total 1,724 Martinets were produced; the majority of which served with either the RAF or Fleet Air Arm (FAA), although a minority of the type were adopted by overseas operators as well during the post war era.

From the onset, this aircraft was intended to be a stopgap measure as the Air Ministry had envisioned its long term trainer to harness turboprop propulsion.

[6] The conversion involved the removal of the outboard wing fuel tanks, the installation of a revised cabin with dual controls fitted, and a reduction in overall weight.

While the two aircraft shared a relatively high degree of commonality, particularly in terms of components, there were also major differences, including the strengthening of the airframe to better handle the stresses of towing a target drogue.

[9] Due to the aircraft's centre of gravity being altered by the design modifications, the engine was brought forwards slightly to compensate; while a more heavy-duty cooling system was also installed to aid the engine in coping with the greater power output needed to offset the elevated drag that was induced while towing.