As far as the landlord thing is concerned, I have comments to make. I own a number of fairly low-rental properties in the north-east of England. ( I don't have a company pension, so these are my equivalent.) I have spent quite a lot of money and a huge amount of time ensuring that they are damp-proofed, well decorated, properly supplied with adequate, often new carpets, curtains, boilers, cookers, fridges, freezers, and washing machines, clean, warm and checked for safe gas (an annual legal requirement) and electricity. They are also all fitted with carbon monoxide and smoke alarms.
There was one house that took absenthusband and me some months to get in order, including paying a professional damp-proofer several thousand pounds and a builder quite a bit to make some walls safe and the roof watertight. The house next door and the one I had bought were advertised to be rented at the same time, but by different agents. The one next door had rotting window frames and sills, a huge damp problem, smelt terrible, the wiring was unsafe and both the inside and outside of the house clearly hadn't be painted for several decades. My pristine, newly renovated house and that slum were both snapped up at the same monthly rate within days of each other.
People need places to live and will take what they can get at any price. Unscrupulous landlords give us all a bad name and make money as well.
I wouldn't have the slightest problem about a law that insists a rental property is fit for human habitation.