It was another morning of commuter chaos on the Tube as the derailment of an engineering train caused severe delays and suspensions on the Central line, a key route to and from east London.

The line was closed between White City and Marble Arch but the problems rippled down the line and some platforms became packed. Wanstead and South Woodford stations were closed as a result.

The knock-on hit other lines which were also busy.

There were also severe delays on the Hammersmith & City line due to a signal failure at Plaistow, following on from yesterday’s bout of signal failures which saw the part suspension of the Jubilee Line, as well as delays on the Metropolitan, Piccadilly and Bakerloo lines.

Central line operations director Peter McNaught said: “I apologise to customers for the disruption they’ve suffered this morning on the Central line.

“This is due to the part-suspension of the line which was caused by a derailed engineering train during the night. Our engineers are working as quickly as possible to restore services on the line. Tickets will be accepted on most bus and train operating company services.”

Mick Cash, general secretary of the RMT transport union, said: “While the union seeks to establish the facts, the incident once again throws under the spotlight the ever present issue of safety on the Underground for both staff and passengers alike.”

TfL said in a statement: “Our engineers are now working as quickly as possible to restore services. As a result there are severe delays to the rest of the line. This is likely to continue during morning peak until midday.”

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