There are still residual delays after yesterday's train disruption due to overhead wire problems.
There are 15-minute delays on First Capital Connect Services between Bedford and West Hampstead.
Tickets are being accepted on other 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