| TBH I have not heard great things of many of the classic mini tuners work on the R53 and R56 ... However I used many of them on the classic and found them good. i even used Minispeed in the past.
I usually would refer to ThinkMINI in worcestershire, 1320 near bedford, Minimania or GTT ... however in terms of map tuning 1320 are the only ones I have real knowledge of after several people whos cars i'm impressed with have used them. | 
