According to author Birch Matthews, the S.6B and Supermarine's racing lineage had played an influence of the design of both the Type 224 and the Spitfire, largely in terms of its aerodynamic cleanness and innovative heat dissipation, there were substantial differences and fresh innovations being incorporated as well. Furthermore, as observed by industrial consultant Philip H. Stevens, the outstanding performance of the S.6B had drawn the attention of not only British military officials and aircraft designers, but internationally as well, influencing new fighter projects in, amongst other nations, both Nazi Germany and the United States.