Updating post from Reddit.
What about those wanting to sell that don’t want to be landlords and can’t? Can’t rent can't sell https://www.moneysavingexpert.com/mortgages/properties-mortgage-lenders-dont-like/ Risky properties: the types of homes that mortgage lenders don't always like – MSE
That is effectively a list of properties for landlords to target, unmortgageable properties (that can be fixed) cannot only be a £steel but with work can once fixed create wealth (when sold) or generate good yields given LTV brackets.
A BRRR target list, for those who do there homework and can apply solutions.