i don't have any qualifications but have worked on construction sites and have some general building knowledge, my dad has built many a house and thinks 6 months is loads to get the knowledge and then another year experience with a company, i'm not so optomistic but it seems it's either 3 years...
i'm considering going on a 6 month gas course with a college in filton which includes the acs assesment/test at the end and then enables me to get corgi registered, the actual course is only 6 weeks but you get a placement with a corgi registered company and do a week at college then work with...