The London Fire Brigade says it is tackling a major fire in south-west London after a four-storey block of flats was engulfed in flames.
About 125 firefighters are attending the scene on Sherbrooke Way in Worcester Park, with a total of 20 fire engines.
The fire service said it had received almost 30 calls about the incident after the fire started shortly before 1.30am on Monday morning.
Ambulances also attended the scene but there had not yet been any injuries reported, the London Ambulance Service said. Staff remained at the scene "as a precaution", a tweet said.
The cause of the fire is not yet known.
The fire service tweeted at 2.30am that "the whole of the four storey building is alight".
"This is a challenging fire and firefighters are working hard to bring the blaze under control," said Graham Adams, station manager at the London Fire Brigade.
"Firefighters will remain on scene for a number of hours and we would urge people to avoid the area if possible."
The block of flats that caught fire was reported to be part of a large high-end development project completed in 2010 called "The Hamptons".
Based on New England "timber boarded" architecture, according to the developer's website, the 24-hectare site contains a number of large blocks of flats as well as park-facing detached mansions worth more than £1m.
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