However, shortly before the British Grand Prix, Arundell suffered a severe accident in an F2 race at Reims-Gueux, and Spence was called up to replace him in the F1 team for the rest of the season.
Con todo, pouco antes do Gran Premio do Reino Unido de 1964, Arundell sufriu un grave accidente nunha carreira de F2 en Reims-Gueux, e Spence foi chamado para substituílo no equipo de F1 polo resto da tempada.