I have been out of running for a few months now, due to an injury, and am slowly working my way back up. Not sure what the reason for my injury was, though it started on the day that I got new trainers. I went to the physio and they say I have a muscle imbalance in my legs. I think it would be best if I went to a running shop that could help me with my running needs. However, I live near Chelmsford in Essex and am not sure if there is a shop near me?