Hi Aaron,
OLCI is by far the quickest route, but extrememly expensive. College is dragged out a bit, but a hell of a lot cheaper.
The 6089 certificate is the NVQ2 in Plumbing. The 6129 is the underpinning knowledge certificate for the NVQ2. Basically its everything you need to know to be plumbing @ level 2.
Re: work experience, you will find it very difficult if you are over 25, as apprenticeships tend to go to those people only unfortunately. However, the Govt is looking to extend this to adult apprenticeships in the next couple of years.
Let us know how you get on mate
