England and Wales: 1930-1949
none of the above
Cavity wall, as built, no insulation (assumed)
To unheated space,  no insulation (assumed)
No low energy lighting
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed before 2002
No time or thermostatic control of room temperature
none of the above
Cavity wall, filled cavity
To unheated space,  no insulation (assumed)
No low energy lighting
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed before 2002
No time or thermostatic control of room temperature