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Direct buses › From London

London ▸ Carmarthen

Carmarthen ▸ London ⇄
1 a dayfastest 5h45National Express🏴󠁧󠁢󠁥󠁮󠁧󠁿 England → 🏴󠁧󠁢󠁷󠁬󠁳󠁿 Wales

Direct buses · no change

LondonReadingCardiffSwanseaAmmanfordCarmarthen· 291 km as the crow flies
  • 11:30 → 17:45
    National Express 508
    London, Victoria Coach Station → Carmarthen, Rose and Crown · via Reading, Cardiff, Swansea, Ammanford
    6h155 stops
    Runs: Mon to ThuBook on National Express ↗
  • 12:00 → 17:45
    National Express 508
    London, Victoria Coach Station → Carmarthen, Rose and Crown · via Reading, Bridgend, Swansea, Ammanford
    5h456 stops
    Runs: Sat, SunBook on National Express ↗
  • 12:00 → 18:30
    National Express 508
    London, Victoria Coach Station → Carmarthen, Rose and Crown · via Reading, Bridgend, Swansea, Ammanford
    6h306 stops
    Runs: Only Fri 30 Oct, Fri 6 Nov, Fri 13 Nov, Fri 20 NovBook on National Express ↗

Local times at each stop. Times from official open data: National Coach Services Dataset (Department for Transport) (file of 23 Oct 2026). Checked Thu 29 Oct 2026; they cover 29 Oct to 25 Nov 2026. Timetables change, so check with the operator before you travel. A bus from a company that publishes no open timetable may be missing. Contains public sector information licensed under the Open Government Licence v3.0: the National Coach Services Dataset (Department for Transport), taken from the Bus Open Data Service website. How we build this.

Quick answers

Is there a direct bus from London to Carmarthen?

Yes. 1 a day on average, with National Express, no change of bus (29 Oct to 25 Nov 2026).

How long is the bus from London to Carmarthen?

The fastest takes 5h45; the slowest 6h30, for 291 km as the crow flies.

When do the buses leave?

The earliest leaves at 11:30 and the latest at 12:00, local time in London. Not every bus runs every day: pick a date above.

Is there a night bus from London to Carmarthen?

Not an overnight one: every bus here travels by day or evening.

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More to Carmarthen

Every bus from Carmarthen