Some 20 fire engines and around 120 firefighters were called to the blaze in William Street on Wednesday afternoon (June 6).
London Fire Brigade (LFB) confirmed crews were tackling “a large fire at a hotel of 12 floors.
The fire is understood to be at the five-star Mandarin Oriental Hyde Park in Knightsbridge.
LFB confirmed crews were called to the scene shortly before 4pm.
