Rail and Tube travellers suffered rush-hour delays today on another scorchingly hot morning.
There were hold-ups on three London Underground lines, while the imposition of a speed restriction affected Greater Anglia main line trains running into the capital.
On the Tube, emergency engineering work at Finsbury Park in north London meant the Victoria line was part suspended for a time, with delays continuing into the heart of the rush-hour.
Signal problems also led to delays on the District line and on the Northern line.
On the main line, the speed restriction was in place at Bethnal Green in east London which led to reduced services between Gidea Park and Liverpool Street station in London.
In northern England a signalling problem caused disruption to services between Sunderland and Newcastle.
This morning's problems followed severe delays to main line services in and out of London's Waterloo station last night, with some commuters taking up to three hours to get home.
Temperatures were hovering around the early twenties in London during rush hour and are expected to peak at 29 degrees at around 7pm.