It quite a good day out, as they open up all the old huts and show what they were used for in the war, also have a few motors on display etc.And theres normal a fly by with some old planes, that skim my roof top !
If your intrested in the history etc. well worth a visit.
I used to work there a few years back, at one of the newer buildings Faulkner House, as I worked for BT Training then, who I still believe own the site.