10th Planet Birmingham is the closest, you should try and make it down at least once a month to train with Mick as he really is awesome and we have guys coming from all over the UK to train with him especially at weekends.
For regular training though Ramone Codrington trains the system, he is in Nottingham last I knew, message him on Facebook if you are on there. You could also get your arse to Paul Daley's Spirit Dojo, no introduction to that guy necessary!