The Thruxton Jackaroo was designed as a four-seat cabin general purpose biplane; the original tandemtwo-seatTiger Moth fuselage was widened to allowside-by-side seating for 4 people. It was marketed as "the cheapest four-seat aircraft in the world". The first conversion first flew on 2 March 1957. Eighteen Tiger Moths were converted by Jackaroo Aircraft Limited between 1957 and 1959 and one aircraft was converted by Rollason's in 1960. The aircraft could be fitted with an optional crop-spraying gear. One converted aircraft was further modified as a single-seat agricultural aircraft, but with little interest in the variant the aircraft was converted back to a Mk. 1.