Major rail disruption on West Main Line services to and from Lancashire
Avanti West Coast said this morning: "Due to damage to overhead wires between Euston and Watford Junction, all lines are blocked.
"Services in and out of Euston have been cancelled until later today."
Ticket acceptance was agreed with London North Eastern Railway between London Kings Cross and Edinburgh via Leeds, in both directions .
Transpennine Express was conveying passengers from Leeds via Liverpool Lime Street and Manchester Piccadilly in both directions until further notice.
Problems were ongoing at 1pm today, with trains cancelled or delayed.
One Lancashire woman braved the journey from London back to Preston this morning.
She tweeted: "We ended up on a 4.5hr round trip Marylebone to Birmingham then onto Preston.
"Hopeful to arrive in 10 mins!"
Later Avanti announced that the problem needed more work.
"This means that services which are scheduled to arrive or depart from London Euston after 2030 this evening will be unable to do so. "