London commuters are this morning enduring major disruption on three Tube lines.
The Metropolitan, Hammersmith and City and Circle lines are all operating with severe delays.
It is due to a faulty train at Euston Square, which engineers are trying to fix.
It means there are severe delays between Baker Street and Aldgate​ on the Metropolitan line.
On the Hammersmith and City line, the disruption is on all westbound services, while the anti-clockwise route on the Circle line has been hit.