Four fire engines and around 25 firefighters tackled a fire at a block of flats on Newington Barrow Way in Finsbury Park.
Half of a three roomed flat on the third floor was damaged by the fire. Around thirty people left the building before the Brigade arrived. There are no reports of any injuries.
One of the Brigade's 32-metre turntable ladders was used at the scene as an observation tower to provide the Incident Commander with an aerial view of the fire.
Control Officers took the first of four calls at 1242 and mobilised crews from Shoreditch, Soho, Whitechapel and Dowgate fire stations to the scene. The fire was extinguished by 1405.
The fire is believed to have been accidental and was caused by an electrical event.