Sounds good, careers such as electrician and plumber can pay very well. Furniture making and fitting is good too - my brother did this for about a year.
If you're not totally sure what route you want to take, you could always try enrolling on a short course (sometimes about 1 week to 1 month) which will give you a starting point, plus let you know if you want to take it further and do an NVQ. These are called 'vocational short courses' so maybe ask about those.
The best route is an NVQ course, or an apprenticeship. They're very well recognised, and should lead you into a job nicely. Typically these last about 1 or 2 years, depending on the level you go for. NVQ Level 1 is fairly straightforward, most people skip it and start on a level 2 NVQ. There's also NVQ levels 3 and 4 which are a bit more advanced - managers generally go for this level after doing level 2.
Have a look at these pages, and put your postcode in on the left-hand side, see which centres (colleges, training providers, sometimes actual companies) are local to you -
Electricals / electronics:
http://www.cityandguilds.com/cps/rde/xchg/SID-0AC0478C-CF09182C/cgonline/hs.xsl/1793.html
Plumbing:
http://www.cityandguilds.com/cps/rde/xchg/SID-0AC0478C-CF09182C/cgonline/hs.xsl/1112.html
Furniture:
http://www.cityandguilds.com/cps/rde/xchg/SID-0AC0478C-CF09182C/cgonline/hs.xsl/7478.html
I recommend giving the centre a ring, or pop into the college, and ask to speak to one of the tutors or someone who can give you some advice on where to start.