Arthur Figgis wrote:

Before 1965 Croydon was a county borough (then lacking Coulsdon and
Purley which formed an Urban District) so Surrey County Council had less
of an impact there. My experience of the Sutton attitude is different

Sutton is (Surrey) on timetables and (London) on tickets. Or is it the
other way round?

The tickets I have to hand from a few years ago (great for bookmarks) say
"SUTTON LONDON". I can't remember seeing it on timetables, but a quick check
of Qjump shows they call it "Sutton (Surrey)".