I hold an English old folks bus pass issued by Derby, but if I want to use the Red Arrow to Nottingham and back I have to buy a Zig-zag (go anywhere on Trentbarton all day after 0900), as bus passes are not allowed. Do Trentbarton have other routes where bus passes are not allowed? -- if I am buying a Zig-zag I may as well get maximum use out of it on the day. (Thanks)