The UK recorded a provisional high of 36.7°C in Somerset, marking its hottest June day on record. Switzerland reported a temperature of 38°C in Basel, also a new record for the month.
South East Water imposed a hosepipe ban in Kent affecting 850,000 customers. Other regions served by the company remain on red alert due to rising water demand.
The London ambulance service handled a record 642 Category 1 calls on one day. The city’s mayor launched a heat plan including home retrofits and increased access to water.