Key Points

• Around 70 firefighters and ten fire engines were deployed to a grass and shrubland fire in Woolwich, south London.
• The blaze, covering five hectares, was brought under control just before 1.30pm on Tuesday afternoon.
• The incident occurred as London remained under an amber heat health alert, with temperatures forecast to reach 28C.
• The London Fire Brigade (LFB) urged the public to take extra care amid dry conditions and warned against attempting to tackle such fires.
• If temperatures exceed 28C, London will officially be experiencing its fifth heatwave of the year.

Woolwich (South London News) August 5, 2026 – Firefighters tackled a significant grass and shrubland fire in Woolwich as the capital remained under an amber heat health alert, with temperatures forecast to reach 28C, potentially marking London’s fifth heatwave of the year. Around 70 firefighters and ten fire engines were deployed to the scene after receiving dozens of calls from the public. The blaze, which covered five hectares, was brought under control just before 1.30pm, according to the LFB.

The Brigade’s Control Officers took the first of nearly 30 calls to the fire at 1127 and sent fire crews from East Greenwich, Eltham, Plumstead, Greenwich and surrounding fire stations to the scene. The cause of the fire is not known at this time. Wildfire beaters were also used by crews; the beater is made of a long handle with a flat piece of rubber at the end, used to beat the flames, which deprives them of oxygen and cools them down.

How severe is the heatwave risk in London?

London could be in the midst of a fifth heatwave as the capital remains under an amber heat health alert. Temperatures are set to hit 28C by midday, with plenty of sunny intervals throughout the day, according to the Met Office. If the mercury exceeds 28C, as is forecast, London will officially be amidst its fifth heatwave of the year.

A heatwave is declared when there is a period of at least three consecutive days where the daily maximum temperature reaches or exceeds a certain threshold, which in London is 28C. On Sunday, temperatures hit a peak of 28.6C in parts of London, while a reading of 30.7C was recorded in Northolt by midday on Monday.

An amber heat health alert remains in place until Wednesday at 9am when the temperature is expected to drop to a maximum of 25C. The amber alert means significant impacts are likely across health and social care services due to the high temperatures, including a rise in deaths, particularly among those ages 65 and over or with health conditions.

What safety advice has the London Fire Brigade issued?

The London Fire Brigade has warned people to take extra care amid the dry conditions. In guidance for people who discover a wildfire, the LFB stressed that individuals should make sure they are in a safe place away from vegetation and smoke, stay calm and call 999 immediately. If in a car, close all windows and vents. When calling 999, be as precise as possible about the location, the size of the fire and any other information. The free what3words app can help pinpoint location, so downloading it now is recommended.

Crucially, the LFB advised: “Don’t try to tackle the fire yourself.” People should also stay well away from wildfires as fire can smoulder or spread underground. Fire chiefs have urged Londoners to create fire breaks around their gardens to stop blazes spreading and destroying their properties.

What recent incidents highlight the wildfire risk?

The Woolwich incident follows a pattern of increased grassland fires across London during hot weather. On Wednesday, the London Fire Brigade experienced its most hectic 24 hours of 2026, addressing 63 grass fires throughout the city as temperatures soared above 30°C. According to the brigade, control officers received over 1,300 emergency calls, and fire crews responded to more than 500 incidents.

The LFB described the last 24 hours as “extremely demanding” and urged residents of London to exercise heightened caution amid the sweltering conditions. In anticipation of further heat, the Brigade is asking Londoners to take extra care in the hot weather to keep themselves and others safe. This includes avoiding disposable BBQs in parks or open spaces, ensuring smoking materials are discarded properly, and avoiding setting up BBQs on balconies or decking.

What weather conditions are expected this week?

Temperatures are set to hit 28C by midday on Tuesday, with plenty of sunny intervals throughout the day, according to the Met Office. The amber heat health alert remains in place until Wednesday at 9am when the temperature is expected to drop to a maximum of 25C. The capital faces a “perfect storm” of rising temperatures, parched land and lower humidity, creating an “exceptional” threat of wildfires this week.

The UK Health Security Agency raised the existing yellow heat-health alerts to amber for London, the South East, East Midlands and East of England based on significant impacts being “likely” across health and social care services. The warning includes potential effects on other sectors such as transport.

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Background of the development

The Woolwich grass fire occurred against a backdrop of increasingly frequent wildfire incidents across London during periods of sustained high temperatures. The London Fire Brigade has recorded its busiest day for emergency calls in 2026, with 63 grass fires tackled in a single 24-hour period as temperatures exceeded 30°C. This pattern reflects a broader trend of climate-related challenges facing urban fire services, with dry conditions and heatwaves creating heightened risks of vegetation fires in and around the capital.

The amber heat health alert system, operated by the UK Health Security Agency, is triggered when high temperatures are forecast to have significant impacts on public health and services. For London, the heatwave threshold is 28C for three consecutive days. The current alert indicates that health and social care services are likely to experience significant impacts, including increased mortality among vulnerable populations such as those aged 65 and over or with pre-existing health conditions.

Prediction: How this development can affect London residents

The Woolwich grass fire and accompanying heat alert highlight several potential impacts for London residents. Increased frequency of grassland fires during heatwaves may lead to more emergency service deployments, longer response times for other incidents, and heightened risks to property and public safety in areas near open spaces and grassland.

Health impacts are likely to be significant, particularly for vulnerable groups. The amber alert indicates elevated risks of heat-related illness and mortality, especially among older adults and those with chronic health conditions. Residents may need to adjust daily routines, limit outdoor activities during peak heat hours, and ensure adequate hydration and cooling measures.

For local communities, the fire risk may prompt increased restrictions on activities such as barbecues in parks, smoking in open spaces, and use of disposable BBQs. Property owners near grassland may need to implement fire prevention measures such as creating fire breaks around gardens. The incident also underscores the importance of public awareness about wildfire safety, including knowing how to report fires safely and understanding the risks of attempting to tackle vegetation fires without proper equipment and training.

Transport and infrastructure may also face disruptions if heat-related incidents increase, with potential impacts on road networks near fire scenes and increased strain on emergency services. The pattern of multiple grass fires during heatwaves suggests that London residents should expect more frequent fire incidents during hot weather periods, requiring heightened vigilance and adherence to safety guidance from the London Fire Brigade and other authorities.