UK weather: Brief relief on Saturday before 35C heat returns

Tropical nights will be experienced in some locations where overnight temperatures are expected to remain above 20C (68F).

This combination of hot days and very hot nights is likely to have a variety of impacts on people and infrastructure.

There is a health risk, especially for the elderly and vulnerable people.

The UK Health Health Safety Agency has already issued separate amber and yellow heat health warnings across large parts of England.

But even younger, healthier people are at risk of developing health problems such as sunstroke and heat exhaustion.

Delays and disruptions to travel networks and power supplies are possible.

There is also the potential for intense thunderstorms, which could pose an additional danger, particularly across parts of England and Wales.