UK summers 'to hit 40C on regular basis even if global warming is limited to 1.5C' "What we regard as normal is changing", meteorologists are warning 05:00, 29 JUL 2021 People in boats on the River Thames in Windsor, Berkshire, during the recent heatwave (Image: PA) Our free email updates are the best way to get headlines direct to your inboxInvalid EmailSomething went wrong, please try again later. Subscribe We use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time.More info