Today10:36 BSTElizabeth Line urgent warning Passengers travelling to Heathrow this morning have been advised to use other services, such as the Piccadilly Line.The full disruption warning for the Elizabeth Line states: "Severe delays between Hayes & Harlington and Heathrow Airport due to a tunnel being closed for safety reasons."Please use the Piccadilly line to travel between Heathrow Airport and Central London."MINOR DELAYS between Whitechapel and Shenfield while we fix a faulty train at Gidea Park."GOOD SERVICE on the rest of the line. Tickets are being accepted on London Underground and London Buses."Content cannot be displayed without consentToday10:26 BSTGood morningGood morning and thank you for joining our live coverage of this incident.We will be bringing you updates as we get them.