There is a replacement bus service running on Arriva Trains Wales between Llandudno and Llandudno Junction because of staff shortages.
There are delays of up to 40 minutes on Arriva Trains Wales services between Shrewsbury and Wrexham Central because of a signalling problem at Wrexham Central.
There's disruption on Arriva Trains Wales and Virgin Trains at Rhyl as emergency services deal with an incident.
The City rail line between Radyr and Cardiff Central is closed due to emergency engineering works.
A replacement bus service is running on Arriva Trains Wales between the two stations.
There's a replacement bus service running on Arriva Trains Wales between North Llanrwst and Blaenau Ffestiniog because of flooding.
Flooding at Blaenau Ffestiniog means there's a replacement bus service running on Arriva Trains Wales between Blaenau Ffestiniog and Llanrwst.
Services are suspended on Arriva Trains Wales between Machynlleth and Shrewsbury because of flooding. Buses are replacing trains.
Services are suspended on Arriva Trains Wales between Shrewsbury and Pwllheli, and between Shrewsbury and Aberystwyth because of flooding between Caersws and Machynlleth.
There are warnings tonight that drunken revellers will not be tolerated on our trains at Christmas.
Arriva Trains Wales have launched a campaign to crack down on anti social behaviour during festive season.
They've released a new video, highlighting the impact it has on other passengers.
Sarah Powell reports:
David Cameron was shown the busiest section of railway in Wales, near Cardiff Central station, where the electrification of the Great Western main line and the Valleys lines will intersect.
The Prime Minister was shown round by Mark Langman of Network Rail Wales.