The semi trained Tesco guys do not necessarily install safe work though, they get the vast majority of their experience in a workshop on a big lump of wood and are then released into the world with some bunch of muppets telling them they're competent. Some will be and some will not. Some will realise they're out of their depth, some will not.
DIY Dave has not been stopped by this farce. I was in a pub just a few nights ago and someone started to crack on to me about electrical work. A guy over heard and suggested the guy talk to someone at the end of the bar who "isn't an electrician but he knows what he's doing" DIY Dve is alive and well mate and still carries on with his botch jobs. It may well have worked where you are but it sure as hell hasn't worked here.
Now, as a trained fire officer you must have undergone some pretty strenuous, intense and demanding training before you were allowed out in the big red truck. How would you and your workmates feel if I was suddenly foisted on you after only a quarter of the training you had to undergo? Of course you'd object because I wouldn't have a fraction of the knowledge you lads have. I'd be a danger to you and to myself but if some muppet somewhere said I was suddenly equal to you then I'm good to go right?
I think you're missing the political aspect of what's going on behind the scenes Clark. The CPS operators were given a chance to deem people competent who had years of experience but no paper quals. They then spotted this as a cash cow, they abused this by badging up anyone and now despite having the failure pointed out to them in BIG HUGE LETTERS they refuse to kill the goose that laid (and keeps on laying) the golden egg.
A proper scheme of registration and licencing for all electricians modelled on Gas Safe will be something that ALL electricians will happily get behind as long as it has a single regulator who is not motivated by money and who has long sharp teeth and the resources and inclination to use them against anyone who transgresses.