Try Prochem
Their courses are mainly at their HQ in the South East, but they do take their courses out on the road once or twice a year. I sem to recall that Manchester was on their schedule.
The course obviously focuses on their own brand equipment and products, but the training is sound and of high quality.
Or you could travel to Leicester to the NCCA 0116 271 9550. Surely a couple of hours traveling isn't a lot to ask for your investment in your chosen profession?
Safe and happy learning
Ken