Met Office issues rare red weather warning for Wednesday and Thursday

UK Health Security Agency also issues red heat alert for six English regions, indicating risk to life even for the healthy

Met Office forecasters have issued a rare red weather warning for Wednesday and Thursday in the face of extreme heat and humidity, while a red heat health alert has been issued in England indicating a risk to life for even the healthy population".

The weather warning covers southern Wales as far west as Swansea, and an area of England that includes London and runs from the inland areas of Kent across to Somerset, as far north-west as Birmingham, and as far north-east as southern Cambridgeshire.