Depending how "East" of London you are you could always look at Headcorn or Rochester.
For the pedants (I guess I must include myself):
Originally Posted by time4parties
As they own the airfield there (Booker)
Not since last year:
The lease on the Aerodrome is held by Airways Aero Associations, once a subsidiary of British Airways, who run the British Airways flying club from the airfield. They provide Air Traffic Control, Firefighting and other services to all the park users. The shareholding of AAA Ltd was sold in 2007 to Arora Family Trust, of which Surinder Arora and his family are beneficiaries.
OC619