There's disruption on First Capital Connect trains between Peterborough and King's Cross and between Welwyn Garden City and Moorgate, because of over running engineering works.
On Greater Anglia trains, replacement bus services are running between Ipswich and Felixstowe because of a broken down train.
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