i have also filled this out, as some of the testing I do involves a high voltage lab. However you do not ask it directly, but I am not sure that legislation is the way to attack a problem of folk being hurt by arc related events, assuming there is a significant problem requiring an attack.

We have commented on here before that a lot of the documentation about arc flash is very US- centric and assumes a prescriptive wiring regulation regime which in the UK we do not have - rather we tend to say you can do things in any way that is equivalently safe, requiring more design knowledge, and less copying by rote.  That requires the background logic, rather than just a conclusion, to be made available in a form that ensures folk can create safe designs.
And the American data tends to be in none SI units that make comparison difficult and does not make use of things we would normally know or measure such as PSSC.
A good first step might be to translate the existing advice into explanations and good practice worded to suit UK practice, as at the moment some folk are clearly overdressed and others are accidentally more risky than they need to be.
Mike,

The questionnaire is a bit odd and very broad, I've seen dangerous events but not a proper arc fault banger, but I'm mostly domestic now and such a massive arc fault is unlikely. What's the true purpose of this questionnaire?

The questionnaire is a bit odd and very broad, I've seen dangerous events but not a proper arc fault banger, but I'm mostly domestic now and such a massive arc fault is unlikely. What's the true purpose of this questionnaire?