<prompt> Rolt akakwikwidza mumakwikwi matatu eFormula One World Championship, British Grands Prix ya1950, 1953, 1955, asi makwikwi ose matatu akapera pamudyandigere. PaBritish Grand Prix muna 1950  <response>: , kutenderera kwekutanga kweF1 World Championship, akatanga ari wechi10 pagiredhi mune ERA iyo yakanga yafanirwa naPeter Walker, asi giya bhokisi rakakundikana mushure mematenderera mana. Mumakwikwi a1953, zvakare akatanga ari wechi10, asi hafu yechivharo cheConnaught yake yakatadza pashure pemakumbo 70. MuGrand Prix yake yokupedzisira, akagoveranazve motokari naWalker muna 1955. Mumutambo waizova wokupedzisira weF1 wevatyairi vose vari vaviri: Connaught yavo yakatanga iri yechi14 ndokubva yapererwa nechinetso chokufambisa pashure pemakumbo 18. Stirling Moss anotaura kuti Rolt angadai ari pakati pevatyairi vepamusoro veGP, dai akamhanya nguva dzose. 