 Both left Jordan for Renault F1 and in 2001, Bell was appointed the deputy technical director at the Enstone team, becoming the technical director in 2003 when Mike Gascoyne departed to join the Toyota F1 team.Bell was Renault F1's technical director during the hugely successful 2005 and 2006 seasons, in which his R25 and R26 won both the Drivers' and the Constructor's championships.The next two seasons saw very few good results, and his projects dropped in the Constructor's championship to fourth place in 2007 and 2008.