And the EPC made to reflect reality not what the tick boxes deem to be the effect of a given measure. An EPC would say this place is fully "double glazed". Well some of it has modern 22 mm sealed units with double sealed openers etc. The rest has seal units with a 4mm gap in ordnary timber casement frames any openers have "draft proofing", where the fittings allow, so are still as drafty as hell.
As the place is already "double glazed" there is no chance of any grants/vouchers/assistance in having replacement windows. Which if the difference the few that have been changed has made could well reduce the amount of oil we burn by something approaching 50%.