The heatwave is being blamed for record numbers of people going to A&E in England in July. As temperatures soared, attendances reached more than 2.1 million - the highest since records began in 2010. The number of patients waiting more than a year for non-urgent surgery also rose to their highest point in more than six years, at 3,517.
This is despite a pledge in 2014 by the then Health Secretary Jeremy Hunt to end the "unacceptable" waits. The figures are part of a raft of data released on Thursday by NHS England.
Health bodies said the heatwave had added to existing pressures on the NHS, with reports of more people turning up with dehydration, heart failure and kidney problems related to the unusually high temperatures.
Prof John Appleby, chief economist of the Nuffield Trust health think tank, said: "July 2018 was the most pressured summer month for A&E departments in recent history, showing that there's no doubt this summer's heatwave has caused severe strain on the NHS." A&E attendances reached 2,176,022 in July - up from 2,091,318 in June - although attendances have steadily climbed since 2010.