That's why it was changed
Basic - everyone can have this, even take one out for yourself
For the others, standard, enhanced, enhanced (barred list)
Then the job/role has to be on the specified list.
Too many companies were demanding them as standard requirement when clearly not needed.
It came up at work last year after an 'incident'.
It was made clear CRB/DBS check were not to be sought as the are no longer allowed Bare in mind the legal team issuing the letter/request will have some standing.
And as this industry/trade is not listed as required by the DBS, it becomes a criminal offence to do one.
Therefore the screening is not exactly watertight.
I think you'll find your replies somewhat contradictory and still making assumptions.
Partition/studded wall?
Back box tight or loose? Irrelevant due to fixings
Rawlplugs? you say it is irrelevant due to wall not being conductive - yet you said earlier, "...if the socket was screwed to the wall the metal box would of been earthed."