Christian Edward Johnston Horner (born in Leamington Spa, England on 16 November 1973) is the Team Principal of the Infiniti Red Bull RacingFormula One team, a position he has held since 2005. His motorsport career started as a race cardriver, before he switched roles to become Team Principal of FIA F3000 and later GP2 Series team Arden International Motorsport in 1999.