I've landed there a couple of times in the past three years (glider land out).
They've got a strip, which they relaid two or three years ago. Clearly, watching out for the wires and met balloon is important.
If you do end up there (in a glider), it's polite to go and apologise to the met office for busting their danger area. They've been friendly - I had a really interesting tour around the met office and good discussion of the research there. Even saw the laser which was mentioned earlier.
Warner Bros were using one of the hangers to film one of the Batman films when I was last there.
Paul