Yea if I get this thing (job - last interview next week, only 2 candidates left, employer told me in confidence I'm currently the strongest) then it is a four stage plan
1) Sit in a travel lodge for a month on me tod to see if I can stick the work and the whole vice.
2) If yes, hunt round for a £800 place for a 12 month rental, get it, shift wifey up there (she doesn't work so not difficult). Leave London house empty (don't rent it out)
3) If all looks groovy after 10 months and I honestly feel I no longer need an 'escape route' back to London - flog London pad and buy house in ruralish village nearish Leicester (plenty of suggestions of places above). Budget around £600,000 (smacking great mortgage of over half that, but this will be my 'keeper proper family home big enough for both us and potentially a couple of teenage kids in the future.) Basically nice enough to feel happy with my lot in life if we never ever move again.
4) Live happily ever after away from the capital, but still having a fairly comfortable middle class life enjoying quiet life but with city nearby for when we want city stuff, eating out, cinema etc.
I'm kind of excited. Nervous as it will be 5 years until I have proper mates up there as good as I have in London, but excited. Relocation and change of life is always a tough slog but possible. I'll keep you posted.