London Tube network faces major disruptions with Circle line suspended

London's Tube network is facing significant disruptions this morning. The Circle line is completely suspended due to a signal failure at Whitechapel. The District and Hammersmith & City lines are experiencing severe delays, with journeys taking about 34% longer than usual. The Overground service is also affected, with delays between Willesden Junction and Clapham Junction caused by a faulty track. Minor delays are reported on the Metropolitan line, but cancellations have eased. Other lines, including the Central and Piccadilly, are experiencing minor delays of around 20%. These issues come just as commuters begin their Friday morning travel, impacting many passengers across the network.