UK heatwave: Second hottest day on record leads to travel chaos
There was also widespread disruption at Euston station in London.
The UK has recorded its second hottest day ever, with temperatures reaching 38.1C (100.6F) in Cambridge.
It breaks the previous record for the hottest day in July of 36.7C, and falls just short of the all-time high of 38.5C, reached in 2003.
Commuters faced disruption after Network Rail reported a number of heat-related incidents on the railway.
Forecasters warned the heat could lead to heavy rain in some areas, causing more disruption to travellers.
The Met Office said the temperature reading from Cambridge was only the second time the UK had gone over 100F.
Elsewhere in Europe, new high temperature records were set in France, Germany and the Netherlands.
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Commuters faced disruption at London St Pancras after overhead wires were damaged
Network Rail said heat-related incidents were causing disruption across the rail network and warned people to make checks before travelling to see how their journey was affected.
It said it was working "flat out" to fix the issues as quickly as possible.
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