Oh i see now. Well anyway i wouldnt reccomend a short course like the one you mentioned to be honest as no social housing company let alone energy company will employ you with a 'bronze domestic installers' (where do they get the names from i dont know). In your situation you will probably be able to get on the level 2 2365 at a local college providing your maths is good. Then u should find some weekend work with an electrician just to get experence