I did an MCC last year with Multicrew down at Bournemouth on the Tristar and would recommend it.
The training is done by ex BA/Virgin training captains. The chance to get 20 hrs poling around in a tristar was brilliant. I know people say an MCC is about teaching CRM etc, which it is, but handling a big jet sim is great practice for when you get your first sim assessment for a job. (remember you only really learn about CRM when you actually start your first multicrew flying job)
I was luck enough to get an interview just months after doing this and did not find the sim ride intimidating at all because of this experience.
Take a mate along and you both save £100.