Yes you are absoulutely spot on and right in what you say; but dont you think that the doors are shut not bolted but shut quite tightly. Very nearly all building contracts no matter haow small have a one liner in them saying installation to be to BS 7671:2001.
Sure, BS7671 is going to be followed widely. As you say, almost all building contracts will contain a clause to that effect, just as they have done since before the IEE Regs. became BS7671.
The non-BS7671 question is probably only going to arise in cases such as a private home build project where the owner is carrying out much of the work himself.
