becoming a sparky...

[SSOTN]

It's difficult to advise someone in your position mate, when there's bills to pay you need an income (as you know)
Things are tough out there in electric land and are probably going to get tougher in the short term. Being an old stick in the mud I'd advise you to steer clear of the "WE wil make you a sparky in a few weeks" courses, they will releive you of boatloads of cash and not give you anything really worthwhile in return (although some would argue with me on that point) as employers will probably not take much notice of you with those quals.
Best advice is to take a trip down to your local college and ask them how to enrol on City and Guilds 2330 and how much it will cost you. This route will take a hell of a lot longer but will be better for you in the long run.
Good luck mate

Everything he said. I'm just coming to the end of that route. After a fair few years and a few thousand quid.