It being a National Holiday, I ventured here again - there have been some changes since my last visit.
If you do partake of the café at the entrance, then be assured that, although £3:20 does seem a lot for a sausage roll, it is a truly substantial thing, more on the scale of a Beef Wellington, but with pork - and the (very nice) coffee came in a proper mug.
There is a VC10 tanker that I don't remember from last time.
And the Catalina has moved outside, which makes a full photo much easier.
I'm fairly sure this is a Wellington wing structure, though there was no signage - it appeared to be "in progress". It does show how uncluttered the inner space was, though.