Actually this movie is of Swedish origin.
And Mio doesn't live in england he lives in the Swedish capital city Stockholm.
My sibblings have this movie and it is based of the book written by the famous children book writer Astrid Lindgren.(1907-2002)
The original name of the movie and book is "Mio min Mio"

I remember Mio in the Land of Faraway. I saw it on the Sci-Fi channel a long time ago.