NORTHERN rail are urging customers to check their journey this Monday, due to planned industrial action.
Some train services will not be running, but replacement bus services will be put on throughout Barnsley, Leeds and Manchester.
A spokesperson from Northern Rail said: "We expect these services will be extremely busy, especially those between Leeds and Manchester.
"Please give yourself extra time to travel and consider whether your journey is necessary."
For more information and to see if you're affected, visit: https://www.northernrailway.co.uk/industrial-action.