Check with your local council regarding solid wall insulation.
Funding seems to come & go but worth looking at.
If it’s in a conservation area they might only be able to do internally, but makes a big difference.
Reckon we’ve saved about 30% on the gas bill.
We have just bought an old end terraced stone cottage with extremely thick stone walls. We are converting the sizeable landing into a bathroom, however have been told this area can get cold (its the inlaws old house, we havent moved in yet) two of the walls are exterior walls, plastered on the inside.
Having googled this, there is some view to taking the outside render off due to letting the walls breathe, being short on cash. i dont fancy that at all. What options do i have to keep it warmish.