This plumbing training course is designed for existing plumbers qualified at level 2, to progress in their plumbing career. To advance onto the Level 3 you must have completed the C&G 6129-2 Level 2 Certificate and NVQ2 to claim the NVQ3. With the City and Guilds 6129-3 Level 3 you will be recognised in the plumbing industry as a qualified competent professional plumber with Gas training and an advanced understanding of plumbing technology, advanced planning, design and Gas systems. The Level 3 package provides all the training and certification to design, install, fault find most if not all domestic plumbing systems including gas appliances.