It is so easy to visualise an idilic life-style surrounded by beautiful countryside with a view (as they so often say in Escape to the Country) to 'die for'!!
The reality is that those 'wonderful' places can be very isolated.
It is fine to say -'the country town is only 15 miles away'. Fifteen miles can be as far as 50 if someone is not able (for many reasons) to drive their own car there. And there are no buses really close by.
There is nowhere quite like London for choice of theatres, museums - even parks etc. as well as shopping and public transports going everywhere in Britain. . Each area of London is really their own little village with their own communities.
So, I would say - think very, very hard and long before making any decision for the rest of your life. Moving out of London is (financially) usually a one-way journey.
Far more important than that wonderful view is closeness of such things as shops, buses, train station, GP surgeries, Pharmacy, dentists, opticians, hospital as well as facilities such as library, park, museums, theatres and/or cinemas, etc. etc.
Most small towns, or larger villages offer organisations like U3A and WI where it is comparatively easy to meet people and take part in things. Most areas welcome more volunteers in charity shops, etc. So, provided you are not in an totally isolated house with only those views to die for close by - you can make new acquaintances, and have new interests.
Do NOT rush into anything - take plenty of time, and try to think how any new place will be suitable for you now, in ten, fifteen and twenty years time.