The 1981 British Grand Prix was a Formula One motor race held at Silverstone on 18 July 1981. It was the ninth race of the 1981 Formula One World Championship. John Watson won his first race for five years, and McLaren's first since James Hunt's victory at the 1977 Japanese Grand Prix. The race also marked the first victory for a carbon fibre composite monocoque F1 car, the McLaren MP4/1. Classification Qualifying †-time disallowed. Race Championship standings after the race Drivers' Championship standings Constructors' Championship standings Note: Only the top five positions are included for both sets of standings. References British Grand Prix British Grand Prix 1981 in British motorsport British Grand Prix