There are 30 minute delays on CrossCountry services between Stansted Airport and Peterborough due to electrical supply problems at Cambridge. This is also causing problems on First Capital Connect services between King's Lynn and Letchworth Garden City.
There are also 30 minute delays on First Capital Connect services between Stevenage, Welwyn Garden City and King's Cross due to a signalling problem at King's Cross. This is also affecting East Coast trains.
There are also 40 minute delays on Greater Anglia Trains travelling between Chelmsford and London and services from Chelmsford may be cancelled.
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