I figure you people either live in actual palaces or sleep the sleep of the already dead.
It's Scotland, you can still buy a 4 bed with 2 reception rooms and 6 lavvies for the price of a Small Hovel in South East England.
If you live in Methil you could buy 5.
Now I think of it my brother's work is mostly commercial, so some of the certification he did be for those regs, which is fine really.
Looks for e-mail again
System Grade: D1
System Category: LD2
I did note that he put in the exceptions "Domestic Dwelling to LD2"
But given the description is:
Category LD2: A system incorporating detectors in all circulation areas that form part of the escape routes from the premises, and in all specified rooms or areas that present a high fire risk to occupants, including any kitchen and the principal habitable room
And Grade D1 is:
"A system of one or more mains powered detectors, each with a tamper-proof standby supply consisting of a battery or batteries."
So that's basically what the tolerable standard required (I noted that the English equivalent is called "Decent Standard")