The UK has experienced its hottest ever day as temperatures topped 41C in the heatwave which added pressure to the NHS, leading some hospitals and ambulances to declare "critical incidents".
Wildfires broke out across the country, with 41 homes destroyed in devastating blazes in London in what the fire service have said was their busiest day since World War Two.
London Mayor Sadiq Khan told Sky News: “Yesterday was the busiest day for the fire service in London since the Second World War.”
