The second Grand Prix of the Royal Automobile Club, commonly referred to as the 1927 British Grand Prix, was a Grand Prix motor race held at the Brooklands circuit on 1 October 1927. It was the fifth and final race of the 1927 AIACR World Manufacturers' Championship season. The race was won by French driver Robert Benoist. It was his fourth victory from the season's five races, a performance that put the seal on his Delage team's already-unassailable lead in the Championship.