On a cold and cloudy morning on Wednesday (October 7), commuters woke up to trouble across the Tube in the east of the capital as signal failures closed some services and delayed others.

The rundown looked like this from TfL at 7.30am.

Circle Line: Severe delays due to an earlier signal failure at Baker Street. Tickets are valid on London Buses via any reasonable route.

District Line: Severe delays due to earlier signal failures at Aldgate East and Stepney Green. Tickets will be accepted on c2c services between Upminster and Fenchurch Street and on London Buses via any reasonable route.

Hammersmith and City Line: No service between Moorgate and Barking due to an earlier signal failure at Baker Street. SEVERE DELAYS on the rest of the line. Tickets will be accepted on London Buses via any reasonable route.

Metropolitan Line: No service between Baker Street and Aldgate while we fix a signal failure at Baker Street. Tickets will be accepted on London Buses via any reasonable route. MINOR DELAYS Harrow-on-the-Hill to Baker Street. GOOD SERVICE on the rest of the line.

The problems were compounded by delays on the London Overground, but they were quickly cleared.