Part of the railway line between Peterborough and Kings Cross is expected to be closed until 7 this morning. Repairs have been carried out to overhead lines at St Neots overnight.
A bus replacement service is in place on First Capital Connect services to King's Cross between Peterborough and Biggleswade until 7am this morning. There are also possible delays on East Coast services.
Abellio, who run the Greater Anglia rail line, has been named Train Operator of the Year at the annual national Rail Business Awards.
Greater Anglia train operator Abellio says it's made real steps in customer service and punctuality in its first year in charge.
Greater Anglia have apologised for the delays that have disrupted services today