RMT say a crack near Selby, due to staffing cuts, has crumbled to a much bigger gap.
RMT claim there is massive pressure from the Government to keep the East Coast Mainline running, as they look to re-privatise the service. They say there are also demands on Network Rail from the budget-holder, the Office of Rail Regulation, to cut back on rail renewals work.
More top news
Thieves who tried to steal a cash machine in a ram raid were thwarted after crashing the ATM into a parked car.
Dancing On Ice champion Jake Quickenden has revealed he will be singing as well as skating on the show's spin-off tour.
What does the weekend have in store for us? Here's the early morning weather with Jon Mitchell.