Oxfordshire's teams were well off the pace in the Italian Grand Prix at Monza won by Formula 1 championship leader Sebatsian Vettel.
Romain Grosjean was the only driver from the county's outfits to register a point, finishing eighth in an Enstone-based Lotus.
Teammate Kimi Raikkonen was 11th, while Pastor Maldonado and Valterri Bottas finished 14th and 15th respectively for Grove-based Williams.
Charles Pic and Giedo van der Garde were 17th and 18th for the Leafield-based Caterham team, followed in 19th and 20th by Jules Bianchi and Max Chilton for the Marussia outfit, from Banbury.
Fernando Alonso was second in a Ferrari, with Webber's Red Bull teammate, Mark Webber, third.