Which British driver is the only person to hold world championship titles on both two and four wheels?

Answer 1

Sir Jackie Stewart has won the most F1 World Championships by a British driver with 3; 1969, 1971 and 1973.

He is the only British driver to win three F1 World Championships.

Answer 2

Nigel Mansell. He is the only driver in history to hold both the Formula One and Indy car titles at the same time. At the time he won the 1993 Indy car title, he was still 1992 F1 Champion as the 1993 F1 Championship was still in progress.

Answer 3

John Surteees