Contact numbers are at the bottom of the home page, they definitely allow xc schooling, although I don't think they're open for schooling at the moment (following BE event).
Easily done when you're trying to have a sneaky look at work!! (As I well know!). Give them a ring and ask, they might be open again now/in the next week or so, but I think that because they run Houghton too they don't have all the jumps out.
thanks for the advice - will probably do so at some point but for now its a quick brake/steering test and as im working really hard with one instructor atm i don't want to "confuse"things but definatly something i could do in a few months