CRM Europe
CRM Europe in Cranfield are very good. I did my MCC and JOC there for a total of £2100. The MCC alone is £1499 and in my opinion was very good.
It is done on an AlsimALX fixed based sim, but the graphics on the wrap around screens make it pretty realistic. Throughout the 2 weeks I was there, there was never any tech problems and everything ran smoothly.
If you are not too bothered about the full motion, CRM are definitely excellent value for money. The cheapest I could find at the time anyway.
Hope this helps,
Burger81