The performance of the S.6B and its forerunners served as the foundations for Mitchell to be recognised as a legendary designer of performance aircraft. The S.6B has been hailed as giving the impetus to the development of both the Supermarine Spitfire fighter aircraft and the Rolls-Royce Merlin engine that powered it. Neither Mitchell nor Supermarine would produce further racing aircraft for successive competitions as work on the development of a new fighter aircraft at the British government's behest had taken precedence.