The UK Health Security Agency (UKHSA)'s has announced an amber alert as another heatwave envelops much of the country.

The Met Office said temperatures over coming days will not be as extreme as the record-breaking heat in July when the thermometer climbed above 40C, however it is still likely to rise into the low to mid-30s.

In line with the amber alert, which covers southern and central England from midday today through until 6pm on Saturday, experts have advised people to look out for the elderly, people with existing health conditions, and young children.

The grass in Ealing's parks and that in neighbouring areas has already turned to straw, with the earth developing deep cracks and serious fire incidents occurring across west London.

Residents are reminded that BBQs and fires are not allowed in any of the borough's parks or open spaces at any time and asked to respect this at all times, with the capital at greater risk of grass fires during hot and dry weather.

Lammas Park has been more beige than green in recent weeks

Some of the most common causes of grass fires are barbecues left unattended, carelessly discarded cigarettes and matches, and glass bottles left on dry grass.

Leader of the council, Peter Mason said: "It may seem harmless, but the truth is anyone having a BBQ in one of Ealing's parks or public areas is risking the safety of people, wildlife and our green spaces.

"We want everyone to enjoy our parks over the summer, but we need local people to do this in a safe and responsible manner and follow the advice of the London Fire Brigade. This means avoiding BBQs and disposing of cigarettes and glass properly.

"During warmer weather our park rangers often see an increase in littering, including abandoned picnics, where irresponsible individuals have left food, plastic packaging, pizza boxes, cans, and bottles discarded.

"We all have a role in keeping our green spaces clean and tidy and anyone planning visit must take all rubbish and packaging home – and never leave it on the ground or piled up in and arounds bins in public spaces. I'd like to thank vast majority of our residents do their bit to keep our parks and green spaces clean, tidy.

A council spokesman has reassured residents that Thames Water is working to ensure that local people continue to have a reliable water supply throughout the heatwave and has meanwhile recommended steps to make sure every drop counts. They include everything from reusing what is left in the paddling pool to water plants, to swapping the hose for a watering can, to letting grass grow a bit longer over the summer.

Health risks in hot weather include dehydration, overheating, which can make symptoms worse for people who already have problems with their heart or breathing, and heat exhaustion and heatstroke.

Heatwave can affect anyone, but some of the most vulnerable are older people – especially those over 75, living on their own or in a care home.

Councillor Mason added: "Heatwaves can be dangerous, especially for those with chronic health issues, older people and the very young. We are working to make sure anyone struggling with the heat is supported and asking our residents to check on older and vulnerable friends, family members and neighbours.

"There is a range of advice is available in the ongoing heatwave, including how to spot the signs of heat exhaustion and heatstroke, and when to get help. I encourage everyone to have a look and make sure they keep themselves, and others as safe and comfortable as possible during the hot weather.

"We have seen an increase in the frequency of very hot weather and heatwave conditions over the summer, with climate emergency contributing to this. It is therefore more vital than ever to build resilience in our communities, support vulnerable people and take bold steps to improve the borough through our climate action programme."

Residents and visitors to continue to respect the ban on barbecues and open fires in the borough's parks and green spaces following a spate of serious blazes in the Feltham and Hanworth areas.