In reply to JonoDHawkins:
Depending what time you arrive (and considering it is a Bank Holiday) there's a Trespass shop on the high street about 15-20 min walking from the station, or else a Sports Direct if you walk towards the retail parks (there's also a large Tesco there that sells camping gear around this time of year) - walking to the retail parks will take a bit longer, maybe 30 minutes.
On the high street there are other sports shops too, but they always seem to be moving around...