Hi mate,
I've just done my HGV - 5 day course and test on the 6th day. Luckily for me, I secured a job just before I started my course (non-HGV). The money's not great and you'll have to spent the first year or 2 driving for agencies before anyone'll take you on full time permanently. Also, as mentioned, there are a lot of cowbow outfits and a lot of brokers out there - avoid both. Get down to any potential training provider, check them out, check their vehicles out, and never part with cash until you're totally satisfied.
Might I suggest registering
HERE. Lots of info and advice available. Let them know where you are and you'll get some training recommendations in your area.
Hope that helps.