A total of 36 hotel guests, including singer Robbie Williams, and 250 members of hotel staff were evacuated from the Mandarin Oriental in London.
The five star Knightsbridge Hotel in central London had over 20 fire engines called to the scene and 120 firefighters tackling the blaze.
Huge plumes of smoke began billowing from the Mandarin Oriental in Knightsbridge at around 4pm yesterday. London Fire Brigade said the cause of the blaze was still unknown but it is believed to have spread across a "vertical facade for plants and vegetation and into several floors of the hotel".
Andre Van Der Bijl, director of global sales groups for the Jumeirah Group spoke about the response from a nearby Jumeirah Hotel. He commented on Facebook: "220 members of staff [from the Mandarin] stood outside the hotel for almost two hours- our GM opened our hotel and asked all the team members to come into our ball room to sit down and eat something and offer refreshments - he personally stood at the door to welcome everyone - so pleased to see kindness still alive - so proud to be part of this brand."
More than 35 calls were made about the fire, with crews from Chelsea, Kensington, Hammersmith, Battersea and other surrounding fire stations at the scene.
Yesterday, a hotel spokesman said: "We are aware that there is a fire at Mandarin Oriental Hyde Park, London, and that the fire brigade is at the hotel.
"As the situation is still unfolding, we have no further details to share at this time, but will provide an update soon."
The hotel has recently completed a multi-million pound renovation and has a number of luxury restaurants including Dinner by Heston Blumenthal.
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