Many British electricians can't see beyond what their current edition of BS7671 says though, so you may have difficult convincing them otherwise.
And even then get it slightly incorrectly!
I was talking to someone who had been told categorically that RFC's were now illegal and everything had to be spurs!
But back to the regs
Please explain how not complying with a non statutory CoP, but designing something that is equally safe could be illegal?
And as was commented on in another thread; if you install a 20A spur to a double socket that you know will be used to supply a washer and a dryer, that would not be acceptable. Saying that the regs allow it would not be a defence if something serious were to occur!
