Setting up shop in a warehouse based on an industrial estate in Hanworth, West London, Hill formed a small team of around 20 engineers and mechanics.

[1] Unfortunately, the second race of the GH1 at the 1975 Spanish Grand Prix[5] was marred by the collapse of Rolf Stommelen's rear wing mounting, which pitched his car into the crowd and killed four people.

[6] After failing to qualify at the 1975 Monaco Grand Prix, a race he had won five times, Hill no longer drove the cars himself, and his driving role was taken over by Tony Brise.

The GH2 was the first Formula One car that Andy Smallman designed from scratch specifically for Graham Hill's team, and it was intended for use in the 1976 World Championship season.

Tony Brise began testing in the late summer of 1975 at Silverstone, and the times indicated the team could hope for a successful season.

During the final test session at Paul Ricard in November 1975, the GH2 was performing well, being much faster than the GH1 and set up changes had made the car easy to drive.

[9] After the deaths of Graham Hill, Tony Brise, Andy Smallman and Ray Brimble on 29 November 1975, the GH2 project came to a halt.