NHS web pages were visited more than 36,000 times over the bank holiday weekend as people sought advice on staying safe in record-breaking heat.

Tuesday was the hottest May day on record for both England and Wales, with Kew Gardens provisionally reaching 35.1°C and Cardiff Bute Park 32.9°C.

Visits to the NHS heatstroke advice page surged to 20,092 on bank holiday Monday, compared to just 488 the previous week, while parents seeking baby sun safety advice drove a 3,500 per cent increase in hits.

Amber heat health alerts remain in place for several regions until 5pm tomorrow.

Chief nursing officer Duncan Burton urged people to check on babies, older people and those with long-term conditions such as diabetes or heart problems.

Fresh warnings have also been issued over open water dangers after several teenagers died across England in recent days, with the RNLI warning of the “very real risk” of swimming in open water during the heatwave.

Despite record air temperatures, water temperatures remained dangerously low, raising the risk of cold water shock.