Six fire engines and around 40 firefighters have been called to a building on King Street in Southall.
Station Commander Alan Brand, who is at the scene said “Four adults and one child were rescued at the rear of the property by firefighters using a ladder.
“A further fourteen adults and two children self evacuated from surrounding properties. Specialist crews are searching the building for anyone else that may be involved.
“This is an ongoing operation and I would ask that people avoid the area if possible.”
More to follow.