To answer
foxromeo9481 about which sim's they use for assessment on phase 4, here goes:
99% of Phase 4 selections are done at Bournemouth on a fixed based Kingair B200 Turboprop sim.
If there is a problem with this sim', and there is availability, the Duchess sim is next. However, they now have two shiny new Diamond DA42 sim's as well, so there is a chance it could be on that.
If Bournemouth is not possible, then the sim assessments are held at the Nursling simulator centre on either the B737-300 or B737-700 fixed based sim. In the unlikely event of neither of these being available, then you could find yourself on a full motion A320 or B737-300, albeit with the motion off.
Hope that answers your question!!
If anyone else wants info on the sim's, let me know and I'll do my best to answer.