- Route
-
X4
- Operator
-
Arriva
- Route description
-
This route serves:
- Heath and Reach (school journey only)
- Leighton Buzzard
- Wing
- Kingsbrook
- Aylesbury
- Traveline link
- Changes to this service
-
This service had a route and timetable change from 22 February 2026. It now operates between Leighton Buzzard town centre, railway station, Southcourt Road to Wing, Kingsbrook and Aylesbury. Sandhills and Roman Gate is no longer served (see Centrebus route L1 for alternative.) Buses now serve Leighton Buzzard High Street on Monday and Wednesday to Friday.