At the 1971 Monaco Formula Three race Wheatcroft became acquainted with Roger Williamson, also from Leicester, and began to support his driving career. Driving for Wheatcroft Racing, in 1972 Williamson won two of the three British Formula Three Championships, and took part in numerous European Formula Three and Formula Two races. In 1973 Wheatcroft sponsored a seat for Williamson in the Formula One March Engineering works team, run by Max Mosley. Williamson's short career lasted two races. He crashed on the first lap of his debut, at the ill-fated 1973 British Grand Prix, then again on the eighth lap of the Dutch Grand Prix. Although he was unhurt in the accident the car had flipped over, preventing his escape, and Williamson died in the subsequent fire. Wheatcroft reflected later that "I lost friends in the war but it was nothing like losing The Lad. Wasn't until afterwards you realised how much he meant."