More creative marketing, a.k.a. bull, from Oxford Airport:
As the nearest airport to the Silverstone race track, Oxford
Ahem, from the AA routeplanner:
EGBV to Turweston/EGBT (3,002ft rwy) 8.4 miles (shorter across the fields)
EGBV to Northampton/Sywell (4,160ft rwy) 25.7 miles
EGBV to Cranfield Airport (5,902ft rwy) 26.8 miles
EGBV to Oxford Airport (5,092ft rwy) 26.8 miles