Can everyone calm down a bit.
I don't know where the 425 rent is the norm, but around here that would likely get you a room in a shared rent, no way it's getting an actual flat. Around here £600 gets you a bedroom in a hmo or about a grand for a 1 bed flat.
Up north.
I pay £595 on a repayment mortgage on the house we live in (although we are like 10 years in), that's up from £400ish starting December when our new 3 year term starts on new rates. 3 bed, detached garage, semi detached house with 2 large gardens (can squeeze 8 cars on the driveway if you play tetris) and a view over farmland at the back.
No idea what it'd rent for but certainly less than a flat anywhere in the south.
Stuff living down south!