Six fire engines and around 40 firefighters tackled a blaze in an office block in East Finchley.
Sprinklers saved an office from being destroyed after a fire broke out late at night.
The fire is believed to have been caused by a build up of grease in the restaurant's ventilation system
Fire investigators believe fire caused by a chip pan fire left unattended
Four fire engines were at the scene
Four fire engines attended the scene
Four fire engines attended the scene
A cupboard on the tenth floor was destroyed by fire
Fire contained to the electrical intake room
Four fire engines attended the scene