What does a red extreme heat warning mean for me?published at 09:03 BST

09:03 BST

A visitor to the capital fans herself in front of Parliament with a red fan. London's Palace of Westminster is visible in the background.Image source, Getty Images

The Met Office’s red warning for extreme heat has just come into effect, meaning an “exceptional spell” of hot and humid weather can be expected across the affected region.

This is only the second time a red warning has been issued since extreme heat warnings began in 2021.

Among the areas included are the East Midlands, East of England, London & South East England, South West England, Wales and the West Midlands.

The Met Office says to expect population-wide impacts, affecting not just those who are most vulnerable to extreme heat, including serious illness or danger to life.

The service says “substantial changes” in working practices and daily routines will be required, while there is also a high risk of heat-sensitive systems and equipment failing.

This could result in power cuts and the loss of other essential services such as water, electricity, gas or mobile phone signal.

Furthermore, delays on roads and road closures are expected alongside delays and cancellations to rail and air travel. Those who experience even moderate delays on such services are at risk of significant welfare issues.

There is also an increased risk of water safety incidents, due to significantly more people visiting coastal areas, lakes and rivers.