Services on the busy section between Piccadilly Circus and Elephant & Castle had to be suspended after a bulge appeared in the tunnel near Embankment station. There were also severe delays on the rest of the line, with disruption lasting through the rush-hour and the rest of the morning.
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Simon's Blog - Phew What A Scorcher!
Thursday night's weather for the west of the region
Thursday night's weather for the east of the region