text: A man dives off of the sea wall near Old Portsmouth, as Britain has sweltered on the hottest day of the year so far, with soaring temperatures sparking a surge in calls for medical help and causing delays on the railway. PRESS ASSOCIATION Photo. Picture date: Tuesday July 19, 2016. Temperatures reached 32.2C (89.9F) at Brize Norton on Tuesday afternoon, the Met Office said, with the mercury predicted to reach 35C (95F) by the end of the day - making it hotter than Barcelona. See PA story WEATHER Hottest. Photo credit should read: Jonathan Brady/PA Wire WEATHER_Hottest_153741.JPG