First stop is to always check out the reputable "proper" colleges in your area. Fair enough the 6129 can be done fulltime but these colleges often offer it part time. At the college i attend, you can do the 6129 mes tech cert full time in 6month course or you can do it 1 day a week over 2 years. During that 2 years, the college have been helping the guys without work placements to get them and then get their 6089 nvq2 running alongside..
Obviously, the real colleges aren't offering fast track courses but i know from a lot of tradesmen around here they would ONLY employ guys from a reputable college. These fast track courses are really starting to get a bad rep.
To give you an idea, i have been plumbing fulltime for 3.5 years now, im finishing off my 2nd year of college and my nvq2. I still dont feel adequatley prepared to work totally self employed......so much to learn. Anyone can put in a new tap...but what do you do if thepipes are corroded, what if the tap doesnt run water once installed, what if the pipes dont reconnect......what im saying is there is so much more to it than the basic lego type plumbing they seem to teach at some of these fast track colleges.
sorry if i've gone on but if you check over this website, theres hundreds of complaints and concerns over these fast track courses yet i find it hard to find even one regarding a proper college