B12 bus timetable
Looking for the B12 bus? 4 different bus routes are numbered B12 across the UK and Ireland, run by 4 operators in 2 areas. They are separate services that happen to share a number — pick yours below for its timetable, stops, live map and fares.
B12 bus in South East England
3 routes
- Buckingham — Buckingham to Banbury via Brackley, Grimsbury Red Rose Travel · Saturdays only · 10:10–15:15
- London — Erith to Coldblow via West Heath, Bexleyheath Go Ahead London · 04:39–00:45 · 59 buses a weekday
- London — Erith to Coldblow via West Heath, Bexleyheath London General · 04:39–00:45 · 48 buses a weekday
B12 bus in Wales
1 route
- Carmarthen — Carmarthen circular via Tanerdy, Cwm-oernant Morris Travel · not Sundays · 09:45–14:50 · 3 buses a weekday
Frequently asked questions
Where does the B12 bus run?
4 buses are numbered B12, in Carmarthen, Buckingham & London. Each one is listed above by area, with its timetable, stops and live map.
Why are there so many different B12 buses?
Route numbers in the UK are chosen locally — by the operator, or by the local transport authority that tenders the service — not from any national list. Nothing stops two towns hundreds of miles apart both running a B12, and 4 of them do. The B12 in Carmarthen has no connection to the B12 in Buckingham: different operator, different road, different timetable.
How do I find the right B12 bus timetable?
Find your part of the country in the list above and open the B12 that starts or finishes near you — each one links to its full timetable, every stop, a live map and its fares. If you know the stop you'll be waiting at, searching for the stop name instead gives you the next departures from that exact stop, which is more reliable than any timetable.
Is the B12 bus the same route in every town?
No. These are 4 unrelated services that happen to share a number, run by 4 different operators. Fares, timetables and accessibility differ on each one, so always open the specific B12 for your area.
Looking for the next bus rather than a timetable? Stops near you shows live departures. Browse all bus routes, every operator or timetables by town. Data from operators via the DfT Bus Open Data Service — see all sources.