Signalling fault delays East Coast Main Line services

National Rail is reporting a fault with the signalling system at Darlington meaning trains are running at reduced speeds on all lines.

LNER, CrossCountry, Northern and TransPennine Express Services are all affected with delays of up to 15 minutes expected.

ℹ️A fault with the signalling system at #Darlington means trains will have to run at reduced speeds on all lines. As a result, trains may be delayed up to 15 minutes.

— National Rail (@nationalrailenq) December 14, 2025

The disruption is expected to last until 12.15 today, National Rail said.