Popular Brighton bus route doubles in frequency – Brighton and Hove News
Timetable changes from Monday 21 November - Swindon's Bus Company
Plymothian Transit: Citybus Timetables: 21
First Leicester confirms bus timetable and route changes to be introduced within weeks - Leicestershire Live
Brighton: Whitehawk and marina bus route 21 improvements | The Argus
Route and Timetable Changes - Cardiff Bus
Plymouth Citybus on X: "From Monday 18th May there will be a change to the 21/21A #PCB21 #PCB21A timetables with an increased frequency of service. The new timetables are available at https://t.co/EjlOiTkf9Y