A major Neasden waste facility fire sent thick smoke across north-west London on Friday, forcing the suspension of Tube services and disrupting rail routes into Marylebone for much of the day.

The blaze took hold at an industrial estate on Hannah Close, not far from Wembley Stadium, with smoke plumes visible from miles away in central London.

The Scale of the Response

The London Fire Brigade received its first call just after 11:30 BST and escalated quickly.

Twenty fire engines and 125 firefighters were sent to the site. The brigade fielded more than 70 separate calls reporting the fire, an indication of how widely the smoke was visible across the city.

Residents in the surrounding area were told to keep windows and doors closed because of the volume of smoke drifting over nearby streets.

What Crews Found

Assistant Commissioner Andy Pennick, speaking from the scene, said firefighters arrived to find a well-developed fire already involving the waste transfer facility. He immediately requested the full complement of 20 engines.

He described it as a protracted incident, warning that crews would remain on site through the remainder of the day working to fully extinguish the blaze.

Pennick also credited the firefighters for their efforts and thanked control room officers for handling the large call volume and coordinating the response.

The industrial unit involved measures roughly 100 metres by 150 metres — approximately 161,400 square feet of floor space.

Transport Grinds to a Halt

The travel impact was substantial and lasted well into Friday night.

The Metropolitan line was suspended entirely for several hours during the afternoon. It later reopened in part, though services remained suspended between Harrow-on-the-Hill and Aldgate.

The Jubilee line experienced partial closures.

National Rail reported delays and cancellations on services running to and from London Marylebone, with lines toward Aylesbury affected by the incident. Passengers were urged to check for updates before setting out.

A Transport for London spokesperson said the operator was continuing to work with the fire brigade to determine what could be run safely for both customers and staff.

Who Runs the Facility

The site is operated by London Energy, a company owned by the North London Waste Authority.

That authority handles waste disposal for seven London boroughs: Barnet, Camden, Enfield, Hackney, Haringey, Islington and Waltham Forest.

A prolonged outage at a facility of this kind creates knock-on problems for waste collection across a substantial portion of the capital, since material normally processed there must be redirected elsewhere.

Why Waste Fires Are So Difficult

Fires at waste transfer stations present particular challenges for firefighters.

The material inside is densely packed and highly varied — paper, plastics, textiles, timber, and whatever else has entered the waste stream. That density traps heat and allows fire to burn deep within piles where water cannot easily reach.

Crews often have to physically break apart the burning mass to extinguish it fully, which is slow work requiring heavy machinery. It explains why Pennick described the incident as protracted rather than something resolvable in a few hours.

The mixed composition also produces the dense, dark smoke that prompted the advisory to nearby residents.

Nearby Businesses Affected

BBC News understands that an Amazon delivery facility located within the same industrial estate was not directly affected by the fire.

Staff there were evacuated as a precautionary measure.

Cause Still Unknown

The London Fire Brigade has not identified what started the fire.

Determining a cause at a waste facility is often difficult, since the origin point may be buried within material that continues burning long after the visible flames are controlled. Investigations of this type typically begin only after the site is fully safe to enter.

Where Things Stand

Crews remained at the scene into the evening working to bring the fire fully under control.

Transport services were gradually restored across Friday night, though disruption persisted on the affected sections. Anyone travelling through north-west London should continue checking service updates, as the recovery from an incident of this scale rarely completes in a single day.