For sure, but it doesn't cost £15 to fix your insulation. For those of us with solid walls it's expensive and very disruptive to install internal/external wal

For sure, but it doesn't cost £15 to fix your insulation. For those of us with solid walls it's expensive and very disruptive to install internal/external wall cladding. I happen to live in an area where I'm not even allowed to install external cladding.