The problem on the line is between Shenfield and Chelmsford on the line towards Colchester.

Services from London Liverpool Street to Norwich, stopping at Diss, will be cancelled, delayed or revised, Greater Anglia said.

The services impacted are:

4.30pm London Liverpool Street to Norwich due 6.18pm

4.30pm Norwich to London Liverpool Street due 6.21pm

5.00pm London Liverpool Street to Norwich due 6.39pm

5.30pm London Liverpool Street to Norwich due 7.21pm

6.00pm London Liverpool Street to Norwich due 7.51pm

Disruption is expected until further notice.

© Eastern Daily Press