Registered local bus service
T4C
Historical registration: not listed in the publisher’s current RegisteredOnly snapshot. This does not establish today’s timetable or vehicle allocation.
91 records
Publisher-supplied variations, newest variation number first. Differing rows with the same variation number are preserved; no missing historical changes are reconstructed.
T4C · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Cancellation of service
Operating between Merthyr Tydfil and Cardiff given service number T4C / T4 / T14 effective from 01 September 2025.
T4 · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Mon-Sun (Timetable variation to remove two evening trips Monday to Saturday
Operating between Merthyr Tydfil and Cardiff given service number T4 / T14 effective from 19 January 2025. To amend Timetable.
T4 · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Mon - Sun (Timetable variation to improve reliability)
Operating between Merthyr Tydfil and Cardiff given service number T4 / T14 effective from 09 September 2024. To amend Timetable.
T4C · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Mon - Sun (Timetable variation to improve reliability)
T4C · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Additional later journey added Mon-Sat
Operating between Merthyr Tydfil and Cardiff given service number T4C / T4 effective from 03 September 2023. To amend Timetable.
T4C · Merthyr Tydfil – Cardiff
via Pontypridd & A470
Timetable variation
Operating between Merthyr Tydfil and Cardiff given service number T4C / T14C / T4 / T14C effective from 23 July 2023. To amend Timetable.
T4C · Merthyr Tydfil – Cardiff
via Pontypridd
Timetable Variation
Operating between Merthyr Tydfil and Cardiff given service number T4C / T4C effective from 08 January 2023. To amend Timetable.
T4C · Merthyr Tydfil – Cardiff
Route Variation
Operating between Merthyr Tydfil and Cardiff given service number T4C / T4 / T4 effective from 29 May 2022. To amend Route.
T4 · Merthyr Tydfil Bus Station – Cardiff, Grey Friars Road
via Dowlais
Route Variation
X4C · Merthyr Tydfil – Cardiff
Temporary Timetable variation
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4C effective from 11 March 2022. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Route Variation
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 10 November 2021. To amend Route.
X4C · Merthyr Tydfil – Cardiff
Route changes due to roadworks in Cardiff causing heavy delays
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 18 October 2021. To amend Route.
X4C · Merthyr Tydfil – Cardiff
Timetable variation to offer consistant times
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 10 November 2021. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Route changes due to roadworks in Cardiff
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 12 September 2021. To amend Route.
X4C · Merthyr Tydfil – Cardiff
Temporary timetable variation due to coronavirus.
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 05 September 2021. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Timetable Variation
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / T4C / X4 effective from 13 June 2021. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Timetable Variation and route change for new bus station.
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / T4C / X4 effective from 06 June 2021. To amend Route and Timetable.
X4C · Merthyr Tydfil – Cardiff
Timetable Variation and route change for new bus station.
X4C · Merthyr Tydfil – Cardiff
Re-opening of Castle Street, Cardiff
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 / T4C effective from 29 November 2020. To amend Route.
X4C · Merthyr Tydfil – Cardiff
Service ramp up with Welsh Government backing.
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 / T4C effective from 06 September 2020. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Special timetable due to Covid-19 outbreak
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 06 July 2020. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Resumption of School Journeys following Covid - 19 Outbreak. Timetable may be altered to accommodate school requirements.
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 29 June 2020. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Special service due to coronavirus outbreak.
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / T4C / X4 effective from 04 May 2020. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Special service due to coronavirus outbreak.
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 / T4C effective from 26 April 2020. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (End of road closure and to reinstate registration back to Variation 63)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 03 November 2019. To amend Route and Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Route diversion due to road closure at Westgate Street, Cardiff)
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 10 October 2019. To amend Route and Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Road Closure)
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 03 June 2019. To amend Route.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Timetable Variation)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 12 May 2019. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (To remove 06:56 journey from Pontypridd to Cardiff.)
Operating between Merthyr Tydfil and Cardiff given service number X4C / T4 / X4 effective from 06 January 2019. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (To amend error on previous registration.)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 02 September 2018. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Timetable variation due to LA re-tender).
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 02 September 2018. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Timetable variation)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 14 May 2018. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Retiming of morning journey to provide better service connectivity).
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 19 November 2017. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Minor stopping amendment on T4 journeys in Cardiff)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 08 July 2017. To amend Route and Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Minor timetable amendment due to error in previous registration, Earlier registration withdrawn)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 30 April 2017. To amend Route and Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Minor timetable amendment due to error in previous registration).
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Timetable Variation)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 30 April 2017. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Retiming of two morning journeys between Cardiff and Pontypridd to improve reliability)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 03 January 2017. To amend Timetable.
X4C · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Journey 0605 Mon-Sat Merthyr to Cardiff, returning to original route following completion of bridge works at Fiddlers Elbow.)
Operating between Merthyr Tydfil and Cardiff given service number X4C / X4 / T4 effective from 10 December 2016. To amend Route.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (The 07:02 journey from Pontypridd to Cardiff will now only operate M-F and on Saturday the journey will operate at 08:45)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 04-Dec-2016. To amend Timetable.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. (Reduce Mon-Sat daytime frequency to 15 minutes)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 30-Oct-2016. To amend Timetable.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday (Frequent) and Sunday service. (Reinstate previously approved under 56 days notice, the registration to start on 28 August 2016. This is due to need to submit a registration for the Fiddler Elbow road works.)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 28-Aug-2016. To amend Route and Timetable.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday (Frequent) and Sunday service. (Re-route the 0605 Mon-Sat from Merthyr to Cardiff between Treharris and Pontypridd due to the road works in at Fiddlers Elbow. Traffic Order attached.)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 09-Aug-2016. To amend Route and Timetable.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday (Frequent) and Sunday service. (Reduce the Sunday frequency to 60 minutes)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 28-Aug-2016. To amend Timetable.
X4 · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. Frequent. (Change the terminus and add extra stops in Cardiff)
Operating between Merthyr Tydfil and Cardiff given service number X4/T4 effective from 31-May-2016. To amend Route, Stopping Places and Timetable.
T4 · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. Frequent. (Change the terminus in Cardiff on the 0725 from Merthyr Tydfil/0842 from Cardiff to improve reliability)
Operating between Merthyr Tydfil and Cardiff given service number T4/X4 effective from 28-Mar-2016. To amend Timetable.
T4 · Merthyr Tydfil – Cardiff
Monday to Saturday and Sunday service. Frequent.
Operating between Merthyr Tydfil and Cardiff given service number T4/X4 effective from 02-Aug-2015. To amend Route and Timetable.
T4 · Cardiff – Merthyr Tydfil
Monday to Saturday and Sunday service. Frequent.
Operating between Cardiff and Merthyr Tydfil given service number T4/X4 effective from 09-Mar-2015. To amend Route and Timetable.
T4 · Cardiff – Merthyr
Monday to Saturday and Sunday service. Frequent.
Operating between Cardiff and Merthyr given service number T4/X4 effective from 26-Jan-2015. To amend Timetable.
T4 · Cardiff – Merthyr
Monday to Saturday and Sunday service. Frequent.
Operating between Cardiff and Merthyr given service number T4/X4 effective from 04-Jan-2015. To amend Timetable.
Official Traffic Commissioner public data. Snapshot updated 8 Sept 2026. Traffic Commissioners / DVSA · CC BY ↗