
We just bought an ex landlord house. Guy had it since 1995 and did virtually nothing to it. What he did do, he did himself and he did it poorly. Here's cracked 40+ year old plaster, blowing out around a window due to damp. Replaster? Nah mate, tape that right up, paint right over it. Good as new.
Also this house at one point was painted all pink before being then painted all blue. Blegh to both imo. Both the dusty magenta and egg shell and navy blues were all terrible. UK landlords owning older homes that need routine maintenance and then doing absolutely none of it are absolutely determined to get damp, it's like they're actively seeking out damp.