Instead of moving away to a place with lower house prices and maybe a bigger garden, when you had DC did you stay put? And how did that go?
Just out of interest really as we are doing this. Not in London but another smaller city in the South. Our DC are getting older now (teens) and it is working out OK. I can't drive, but we can walk or get a bus / uber if needs be. We have a small place with no garden, but it is great to have everything close by. And when they leave we will still be there, no need to downsize.