Riseley-Prichard shared an Aston Martin in the infamous 1955 24 Hours of Le Mans race with a young Tony Brooks, but after the trauma of this event retired from race driving.
Riseley-Prichard compartiu un Aston Martin na famosa carreira das 24 Horas de Le Mans de 1955 cun novo Tony Brooks, pero despois do trauma deste evento retirouse da carreira.