Disruption between London Euston and Northampton, between London Euston and Birmingham New Street and between London Euston and Crewe due to overhead line problems at Wolverton.
All lines are blocked and trains are currently unable to run through the area. Trains between London and Crewe may divert via Northampton. Delays of up to an hour can be expected.
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