Royal Parks staff have been advised not to leave deckchairs under trees over fears branches will fall during hot weather, as the fourth heatwave of the year looms.
The charity, which looks after green spaces including Hyde Park and Kensington Gardens, said it has made the measure as an “additional precaution” during the prolonged dry and hot weather.
It comes as the country prepares for more scorching conditions, with temperatures expected to peak as high as 35C across southeastern England on Wednesday.
A spokesperson for Royal Parks said: “We are fully aware of ‘summer branch drop’, when trees can shed branches due to stress from prolonged dry, hot weather, particularly when periods of heat are interspersed with heavy rain.
“Managing a landscape with tens of thousands of trees is complex.
“While it is never possible to eliminate risk entirely, we take active measures to reduce it as far as possible.”
The organisation looks after eight parks and other public green spaces in London, including Richmond Park, Brompton Cemetery and Victoria Tower Gardens.
It added: “Our expert arboricultural teams carry out comprehensive, regular inspections, especially in areas with high public footfall and during periods of extreme or changeable weather.
“Where any risk is identified, we undertake essential tree maintenance, and as an additional precaution, we have instructed our deckchair concessionaires not to place deckchairs directly beneath tree canopies.”
The UK Health Security Agency (UKHSA) has issued an amber heat-health for the East Midlands, East of England, South East and London.
The alert is in place from Tuesday to Thursday, and the agency warned that rising temperatures may increase health risks, particularly for vulnerable groups.
July has been 3C above average across the UK, according to provisional Met Office data on the month so far, potentially putting it among the hottest three or four months of July on record.
Elsewhere in London, firefighters tackled three separate grass fires across London on Monday, which led to four hectares of land damaged by blazes in one evening.
The fires occurred in Enfield, Bexley, and in Erith.
Assistant Commissioner of London Fire Brigade Pam Oparaocha said: “While we are fully prepared to respond, we need everyone to play their part in helping to prevent incidents.
“Wildfires in particular can spread rapidly, require significant resources and have devastating consequences for people, properties, wildlife and the environment.
“Wildfires can also have a lasting impact on the health of Londoners because of the smoke plumes that they produce.”
Ms Oparaocha advised people not to take disposable barbecue with them when visiting parks and open spaces.
The UK is braced for further wildfires, with an assessment from the Met Office showing fires could be exceptionally severe by Wednesday if they start in parts of London, the South East and eastern England, as a result of the hot, dry conditions.
