Sorry didn't answer your question about course Richie, I did it in Hereford, hour away for me but was the closest I could find. Your in somerset so obviously too far!
You can do a ten week evening (1 evening a week) or a 3 day course (mon-weds 9-5pm) which amounts to the same hours. I did the days as didn't want to forget from one week to the next and was advised the days were better.
I did MIG, Stick and gas welding. But concentrated on Mig only on the last day, great course as you could choose what you wanted to concentrate on. I just did abit of gas (couple of hours), day on stick and 2 days on Mig.
Cost me £195 which I thought was value for money as tutor was great and you could weld as much as you wanted. May even do a qualification next year for the hell of it, thats 10 weeks or 3 days again.