Scientists say record-breaking heat is a reminder of how climate crisis is affecting lives The fierce heat sweeping across Europe over the bank holiday weekend has beaten the UK’s all-time temperature record for May, with scorching highs of close to 35C. A temperature of 33.5C was recorded at Heathrow airport on Monday lunchtime, according to provisional data from the Met Office, beating the previous May record that was set in 1922 and reached again in 1944. Later in the afternoon a temperature