Dont forget - Shuttleworth & Hendon
1. Old Warden & The Shuttleworth Collection.
If your lucky and get to Old Warden on a good weather day with light winds - it is a day out to remember.
Check the website(its north of London and the M25 by about an hour) and the atmosphere is out of the 30s. Take folding chairs and a picnic and have a ball sitting just behind the fence in the slipstream of a Spitfire or Hurricane as the crank up. My favorite was seeing the pre-WW1 stuff doing their hops and an amazing WW1 monoplane the Bristol M1 perform.
2. Hendon Museum is a great half day out as well, and its free.
Farnborough Station is not far from the airfield - I would guess 2 km, but the rail fares are pretty rude to and from London. Some pretty neat history in and around Farnborough. I was walking along the canal next door to the airfield a few years back and picked up an old German small arms casing.
Good luck with the weather.
RO