Fallows started his career in F1 when he was recruited in 2002 by Jaguar Racing as a senior aerodynamicist. However, when Ford announced its decision to stop its involvement in Formula 1, he moved to Italian chassis builder Dallara. In 2006 Fallows returned to the Milton Keynes outfit, which had now become Red Bull Racing, where he took on the role of team leader in the aerodynamics department, helping the team to its first podiums, victories and ultimately to eight world titles in four years between 2010 and 2013.[3] In 2014 he stepped up to become Head of Aerodynamics and subsequently helped shape the team's progress through F1's hybrid era.[4][5] On 25 June 2021, it was announced that Fallows had agreed a contract with Aston Martin Formula One team, to commence on 2 April 2022.[6]