Trimmer entered six Formula One World Championship Grands Prix with uncompetitive teams, firstly Maki for four races in 1975 and 1976, resulting in four failures to qualify.
Trimmer PARTICIPOU en seis Grandes Premios do Campionato do Mundo con equipos non competitivos, primeiro con Maki, en catro carreiras en 1975 e 1976, non logrando cualificar en ningunha das catro.