On 31 January 1942, the Squadron moved to RAF Kings Cliffe. After an uneventful few months, RAF Fighter Command resumed its offensive policy in April 1942 when the weather cleared for large-scale operations. Johnnie flew seven sweeps that month. But the situation had now changed. The Spitfire V, which was flown by the RAF had been a match for the Bf 109F, however, the Germans had introduced a new fighter: the Focke-Wulf Fw 190. It was faster at all altitudes below 25,000 feet, possessed a faster roll rate, was more heavily armed and could out-dive and out-climb the Spitfire. Only in the turn could the Spitfire outperform the Fw 190. The introduction of this new enemy fighter resulted in heavier casualty rates among the Spitfire squadrons until a new mark of Spitfire could be produced. Johnson claimed a damaged Fw 190 on 15 April 1942 but he witnessed the Fw 190s get the better of the British pilots consistently throughout most of 1942: