Commuters trying to get to work in the City via London Liverpool Street may experience delays this morning.
Network Rail said engineers have identified an issue with a set of points whilst doing an overnight inspection.
This has resulted in platform 13 at Liverpool Street being closed until repairs are completed, affecting Greater Anglia services into the station.
A reduced service will operate to and from London Liverpool Street, meaning that trains will be cancelled or revised until 11:30.
#LondonLiverpoolSt Really sorry for the disruption. Engineers are working as fast as possible to resolve the problem.— Network Rail (@networkrail) July 7, 2017