A fire has broken out in a block of flats and offices in east London. London Fire Brigade said they were called to Whitechapel High Street shortly before 4pm. Twenty fire engines and 125 firefighters are at the scene. A spokesman for the brigade said: “Crews are tackling a fire on the 17th floor of the building. The Brigade’s 64m ladder has been mobilised to the incident. “The Brigade’s 999 control officers have taken more than 50 calls to the blaze. “The Brigade was called at 15.53. Fire crews from Whitechapel, Shoreditch, Dowgate, Bethnal Green, Dockhead, Old Kent Road, Islington and surrounding fire stations are at the scene. “The cause of the fire is not known at this stage.” The Metropolitan Police said the building is being evacuated. A spokesperson for the force said: “We were called to the scene at 15.55 to reports of a fire on Whitechapel High …