In terms of Classic performances, 1963 and 1965 were probably Simpson's best years. Riding in the distinctive black-and-white colours of the Peugeot BP team. in 1963, he won the gruelling motor-paced event Bourdeaux-Paris, was second in Paris-Brussels and Paris-Tours, third in the Ronde van Vlaanderen, 8th in Paris-Roubaix, and 10th in both La Flèche Wallonne andGiro di Lombardi.
In terms of Classic performances, 1963 and 1965 were probably Simpson's best years. Riding in the distinctive black-and-white colours of the Peugeot BP team. in 1963, he won the gruelling motor-paced event Bourdeaux-Paris, was second in Paris-Brussels and Paris-Tours, third in the Ronde van Vlaanderen, 8th in Paris-Roubaix, and 10th in both La Flèche Wallonne andGiro di Lombardi.