Addis, Faith "Down to Earth: Year of the Cornflake" - 1987
Apparently, there has been a show on British television about this which I have never seen.
A London family sells their business and moves to Devon to settle in the country and open a holiday home.
I thought this book was interesting as it shows that it's not always easier and more easy-going in the country.
From the back cover: "This series follows Faith and Brian Addis as they work to keep open their holiday home "Phyllishayes" - a roomy farmhouse in Devon offering memorable holidays for children who may never have experienced the countryside in their lives. It ties in with the TV series starring Pauline Quirke."