HENRYs with kids that want to leave London

Contrary to a post I saw yesterday in this sub, I am convinced that moving out of London would be the best move for my young family.

What places in the south of England have HENRY'S moved to that have good schools, are safe, activities for the whole family and an OK commute to London a few times a month?

Did you regret making the move ?

Edit: I visited Chichester today (as part of my weekend explorations till I decide where to move) and it was quite nice down there.