Cicare
There is one in the UK.
Some guys have been trying to set up an indoor arena with several machines mainly aimed at corporate entertainment.
last I heard they were trying to set up in Birmingham.
Had a go in one and it was great fun, the rig was controlled by an operator on the ground who could give you engine failures and stuff to cope with.
It would certainly save you a whole lot of money trying to grasp the basic hovering but there is no substitute for the real thing.