Be thankful that your not a pipe fitter (aka heating engineer) or plumber (aka sh*t house mechanic). First you have to do the training (4 years to become a craftsman. Not 4 day's as it says in some of the papers) at college and on site (this can cost if you are over 18 and your employer wont pay. Check out
http://www.lcb.ac.uk/courses in options 2 select Services Crafts division for the costs)
Then once you have your papers and paid for your CORGI registration, you still have to go on courses every 3 to 5 years depending on the type of firm you work for.
If you are just a general plumber and doing nothing but domestic's (aka house bashing) thats fitting bathrooms and domestic hot water/heating systems, then you only need your CORGI and domestic gas (there are different sub catagories covering boilers etc and have to be re-take it every so many years) certificates.
But if you work in the comercial/industrial sectors then you need the above certificates +
Comercial/Industrial gas
Welding (pipe fitter) has to be re-taken evey 3 years
PASMA (pre-fabricated mobile tower scaffolding erection) again re-taken every so many years.
MEWP'S (Mobile Elevating Working Platform's) again taken every 5 Years.
AND THE BIGEST JOKE OF THEM ALL
CSCS (Construction Skills Certification Scheme) this little baby requires you to sit a Health and Safety exam (LOL rolling on the floor laughting. NOTE 77 people died last year on construction sites in the U.K.) and has to contain ALL your quilification (which if you send off your certificates you may or may not get back).
This is only a problem when you are self employed, not when you are "on the books" (the firm pays for it all unless you leave their employ within 1 year of taking the exams).
And when people find out what my day job is they ALWAYS think I'm earning £60,000 and driving a sport's car (I wish :-). The hourly rate for a craftsman is £10.73 - £11.69 and £11.69 - £13.13 for a Senior Craftsman. You do get a bit more (plus tax breaks) if you work for an agency but then your classed as self-employed.
And since I'm getting tired of getting out of bed at 05:30 every week-day, then traveling up to a hour and a half to get to work, doing 9.5 hours dirty back braking work then up to a 2 hour drive home. And since I have a knack with computers. I'm thinking of a career change got any tips :-).