The UK Health Security Agency has issued a six-day heat health alert covering southern, eastern and central areas of England, running from Friday through next Wednesday as the country prepares for what could be the hottest May bank holiday on record.

Temperatures are forecast to reach 33C (91F) during the holiday period, prompting health officials to activate the alert system designed to protect vulnerable populations during periods of extreme heat. The alert covers a significant portion of England's most densely populated regions.

The timing coincides with the May bank holiday weekend, when millions of Britons typically travel for short breaks or outdoor activities. Weather forecasters are describing the expected conditions as 'exceptional' for this time of year.

Heat health alerts are issued when temperatures are expected to have significant impacts on health, particularly affecting older adults, young children, and those with underlying health conditions. The six-day duration indicates sustained high temperatures rather than a brief spike.

The alert system was developed following previous heatwaves that resulted in increased hospital admissions and excess deaths among vulnerable groups. Health authorities typically advise people to stay hydrated, seek shade, and check on elderly neighbors and relatives during such periods.