In 1968, Widdows joined The Chequered Flag team to compete in a McLaren M4A and that year took part in his only World Championship Grand Prix, for Cooper, in the British Grand Prix at Brands Hatch but retired with ignition problems.
En 1968, Widdows uniuse ao equipo The Chequered Flag para competir nun McLaren M4A e ese ano participou no seu único Gran Premio do Campionato do Mundo, para Cooper, no Gran Premio do Reino Unido de 1968 en Brands Hatch, pero retirouse con problemas de ignición.