A lightning strike has caused damage to signalling equipment which is affecting rail services between Ely and Peterborough.
Crosscountry, Greater Anglia and East Midlands Trains are all warning of delays of up to 30 minutes.
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