LONDON, July 18 Reuters Britain was on course for its hottest day on record on Monday with temperatures forecast to hit 40C for the first time, forcing train companies to cancel services, schools to close early and ministers to urge the public to stay at home.

Much of Europe is baking in a heatwave that has pushed temperatures into the mid40s Celsius over 110 Fahrenheit in some regions, with wildfires raging across tinderdry countryside in Portugal, Spain and France. 

Britain39;s government triggered a national emergency alert as temperatures were forecast to surpass the 38.7C 102F recorded in the Cambridge University Botanic Garden in 2019 on Monday and Tuesday.

We39;ve got a difficult 48 hours coming, Kit Malthouse, a minister in charge of government coordination, told BBC radio.

London39;s metro network imposed temporary speed restrictions for Monday and Tuesday, meaning it would run a reduced service with journeys taking longer than normal. It urged commuters to only travel if essential.

The national rail network also urged passengers to stay at home and said some services including a key route between northeastern England and London would not run during parts of Tuesday.

Jake Kelly from Network Rail said he hoped normal operations would resume on Wednesday, when temperatures are forecast to fall, but that would depend on the damage that the weather does to the infrastructure over the next couple of days.

HIGH ALERT

The government urged schools to stay…