here is my two pennies worth and i welcome any thoughts. Firstly, as far as I know, as it now stands, you do NOT need to be a qualified electrician to do domestic work. You need to be registered with a scheme (cough) provider. The most they are asking for is 17th edition, and to prove COMPETENCY through a couple of jobs. This course that you propose to do is OBSCENE and should not be considered. Sell a kidney instead.
There will always be jobs for good electrician's mates. Stuff the domestic and get into commercial/ industrial and let your work show how good you are. You should be on at least £10 an hour doing that. And before you all contradict me, I know a good few people who RUN jobs and don't have their full ticket, and a some on £15 p/h because they are reliable, and competent. Larger firm will have their own qualifying manager to test etc.. and all you have to do is show up on time and work. Working for yourself is hard work. There is a lot to be said for letting someone else do al the running around, drumming up work, pricing/ tendering, buying materials, paying people, doing VAT/ PAYE/ Monthly returns. Go to work, get paid, go home. LIVE.
There will always be work for good electrician's mates. They do a good job, and deserve respect. They have a grading, and pay rate from the JIB to reflect the part they play in the whole industry.
Good luck. And please don't waste you're money on that course. PLEASE.