More than 100 firefighters tackling blaze at old BBC Television Centre

The London Fire Brigade (LFB) said 15 fire engines were in attendance at the building on Wood Lane.

The fire is affecting floors towards the top of the building, which include a restaurant and an area of external decking and ducting, while an unknown number of flats have also potentially been affected.

LFB and the Metropolitan Police are working to evacuate nearby buildings as a precaution with a rest centre being set up for those who had to leave their homes.

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According to footage from the scene shared by LFB, the fire appears to be affecting the Helios Building at Television Centre, the former home of the BBC.

The broadcaster was primarily based out of the location until 2012, and the website for the Helios Building says it currently accommodates 162 homes, along with a gym and a 47-bedroom hotel.

A baby was treated by paramedics then discharged at the scene of the blaze.

Gary Melia, Station Commander for London Fire Brigade, told LBC: "A young baby from one of the flats took a bit of smoke inhalation. So as a precaution, London Ambulance Service (LAS) had a look at the baby at the scene and they've all been released, so everything is fine."

An LAS spokesperson said: "We were called at 3.13am today to reports of a fire on Wood Lane in White City.

"We sent resources to the scene, including an ambulance crew, an incident response officer and our hazardous area response team.“We have treated one patient and discharged them at the scene.

"The incident is ongoing and we remain on scene as a precaution, working closely with our emergency services partners."

Wood Lane is closed to traffic and people are advised to avoid the area.

A spokesperson for the Television Centre said: "Earlier this morning, a fire occurred in the Helios building at Television Centre in West London, which is now contained.

"We can confirm that residents and staff members were evacuated safely. We are hugely grateful to the London Fire Brigade for their swift response, and to the Metropolitan Police for their support.

"We continue to work closely with the emergency services and local authorities to ensure the building is secure."

Li Mei, 36, who lives in a luxury apartment block across the road, told the PA news agency: "I got up this morning and my partner told me to look out of the window.

"There was so much smoke – we were worried it was going to get worse.

"Thank God it seems like nobody has died."

The brigade said first reports of the fire were received just after 3am and crews from Hammersmith, North Kensington, Kensington, Chiswick and surrounding fire stations were mobilised to the scene.

Two 32-metre turntable ladders are being deployed as water towers to help extinguish the fire from height.

The cause of the fire is not known.

Mr Mealy added: "The fire investigators have come here, they'll be interviewing the first firefighters, and they'll start to build a picture before they can actually go into the scene.

"We've also got some salvage works going on below to try and limit the damage, but the investigations have already started."