Britain was on course for its hottest day on record with temperatures forecast to hit 40 degrees Celsius for the first time, forcing train companies to cancel services, schools to close early and ministers to urge the public to stay at home. #News #Reuters #Britain #weather #heatwave #emergency #health Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en