Returning to the UK

.....but where??

I would love any of you GN-ers to give me some good reasons on where to choose. We've been away for the last 10 years, and feel it is time to 'come home'. I feel I'm becoming increasingly isolated.
One son and family live in the States, and a brother, but that's not possible. Neither is Canada, where my sister lives. I have one son in London, but that's financially impossible, and I wouldn't want to live on his doorstep, and neither would he I suspect! He's busy with his life. No children......yet. Another brother across the other side of France - but it's still France!
It's lonely with no family around - so where's a good friendly place to be with lots going on? Don't mind about the weather. Beautiful countryside, hills, big skies, good walking tops the list.
I've lived in the south east and south west - but thinking further afield may be an option.

So far, the Northumberland coast has been suggested.

It'd be great to have some more ideas.