Kev Rowell got me through non-approved IR on my budget (£5000), in around 16 hours flying before test.
The sim is identical to the a/c (Cougar) as has been mentioned. There was a problem with a/c availability when I was there, i.e. only one IR-approved twin, which was forever going tech, but I believe that there are now more aircraft available.
Very relaxed place, CAAFU examiner on the airfield, and above all LFS are very cheap!
ST