We were recently on a several week trip to the UK and needed to wash some clothes. It seems that coin op Laundromats are rare or unheard of in England. In asking around town in Bakewell, we were directed to the Clean Sheet Laundry. This place may not be the easiest to find, but the service and price were great.
We needed our laundry done with a one day turn around (travelling, remember). They washed, dried and folded a whole bag for 9 GBP.
They are in the Riverside Business Park on Buxton Road and the tel # is 01629 813311