The RMT Union has confirmed that cleaners on the East Coast Mainline and the Tyne & Wear Metro are striking for 48 hours.
The cleaners are in dispute with their contractors over their pay and conditions.
More top news
Christmas Eve could be rather frosty and at present, Christmas Day looks like being cold and clear with one or two wintry showers
Police are appealing for the public's help to trace a missing Sunderland man.
Two brothers have been found guilty of murdering a man from Sunderland.