@resjudicata I was thinking it's a big job, that might be a bit beyond my skill level.
My friend suggested removing a single brick and looking inside to check for bridging.
@resjudicata I want tilt and turn! My current windows are about 25years old so they're due for an upgrade.
When you says cavity wall clean, what do you mean? I wonder if that might help (Victorian dream home turning into pain in the arse).
@resjudicata I considered both dryer and dehum for my clothes and eventually settled on dehum because it doesn't just do clothes it does the whole house too. I have to be strict about switching it off promptly or it'll end up costing as much as a dryer.