The warning, issued by the UK Health Security Agency, came into effect from 12pm on Tuesday, August 11 and runs until 9pm on Friday, August 14. It comes as hot weather sweeps across the UK with temperatures set to reach 31C across Bournemouth, Christchurch and Poole on Thursday. The UKHSA says “significant impacts are likely across health and social care services due to the high temperatures”. This includes: