Trains on some of the country's busiest routes were cancelled or delayed tonight because of emergency 'heat related' engineering work, causing disruption for thousands of passengers.
South West Trains services to and from London Waterloo were hit at the height of the evening rush hour, on one of the hottest days of the year. The disruption was caused by emergency engineering work and signalling problems near Haslemere in Surrey.
More top news
Philippa has the latest weather update for the east
Philippa has the latest weather update for the west
Latest pollen forecast