It is actually non-statutory as such and has always been so (slight difference recent mention in some slight way in statutory requirements).
But, probably similar to the relationship between the Highway Code and the Road Traffic Acts etc, I think. It might be prudent to guard against you Gripping the Rail before someone in a wig asking "why did you not follow this nationally recognised good practice minimum requirement idea then ?".
Other forum members might correct some of what I`ve just said here though
It is actually non-statutory as such and has always been so (slight difference recent mention in some slight way in statutory requirements).
BS 7671 ("The Regulations") are not legislation, agreed.
BUT BS 7671 is mandated in legislation for certain installations - see Regulations 21 and 22 of ESQCR (meaning, for example, every installation with grid-connected Solar PV and/or a grid-connected battery is required by legislation to comply ... presumably fully ... with BS 7671).
