I went to one in Yorkshire a while back. It's not certified for exams, but the instructor's an ex 747 pilot and will give you a hard time in the sim just like at interview. It's obviously an old sim but I found it a useful hour. The whole place is quite impressive, the briefing room is a mock up of an airliner cabin. It's mainly targeted at the public, but if you give them a call and explain your needs they accommodate. They won't give you the late offer discounts, though, for what they call training, but if I remember I paid about 180 quid for an hour which I thought was good value compared to more modern sims. A google search will come up with their web page. Try under Yorkshire simulator or something like that. And no I don't work for them. You'll probably want solo but if you fancy pairing up PM me and we might be able to cost share.