I will be using some work I'll be doing for a friend, for my assessment with a governing body. Clearly I want to get things right, not just for my assessment. A friend wants his CU replaced. It is currently positioned inside a wall unit in his kitchen, but fixed directly to the building fabric. It is over 300mm from the sink etc, and you would not have to learn over any hob etc to get to the CU. However, the CU would not be located in a zone of 450-1200mm. However, I believe this (Part M1) only applies to new dwellings. Is there any thing else I need to consider, re the positioning of the CU? Effectively, I will be replacing the CU to the original position.