Oh dear... 9FLYJET9... you should not believe all you hear!
Yes, there is one sim at Alpha UK but it is heaving full with Jet work. Jet wouldn't be there if they weren't happy. 150+ successful Indian students (type rating and Upgrades) in 1 and a half years speaks a huge amount! Of course, there are always some who might be unhappy but think ... was about the training company or the student! I probably know the answer!
Further, your comment about sims is irrelevant - Cockpit 4u, for example, have none!
Happy hunting!!! RR