On Formula One coverage from the 1980 Monaco Grand Prix to the 1993 Canadian Grand Prix, Walker struck up a surprisingly successful, and extremely popular, double act with World Champion James Hunt. Initially, they did not get on, as Hunt's interests, personality and private life appeared to have little in common with Walker's. However, the pair eventually became good friends. Walker and Hunt were to work together for more than a decade at the BBC, until Hunt's death from a heart attack two days after the 1993 Canadian Grand Prix, aged 45.