De Angelis was then promoted back to outright number one for the 1983 season. This was demonstrated by the fact that he had exclusive use of the quick but unreliable Renault turbo-charged 93T for the whole season, and Mansell did not get to drive a turbocharged car until the ninth round, the British Grand Prix at Silverstone, a race where he climbed from 16th to second and eventually finished fourth in a brand-new, hastily designed 94T. Due to their tumultuous relationship and a lack of decent results, Warr was not keen on honouring the last year of the contract that Mansell had signed with Chapman. However, with encouragement from Lotus's sponsors, John Player Special (who allegedly preferred a British driver), and with the only other remaining top British driver (Derek Warwick, after John Watson's retirement) already confirmed to be joining the factory Renault team, it was announced Mansell would be staying with the team.