"The fire is believed to have started in a property that was undergoing refurbishment work, at one end of a terrace of three properties in residential and office use. The upper storeys of the property collapsed during the fire. The neighbouring properties also suffered some fire and smoke damage.
"Firefighters will remain at the scene for some time yet and a fire investigation officer will begin looking into the cause of the fire later this morning."
More top news
The Airports Commission is to publish its report and recommendations on whether an extra runway should be built at Gatwick or Heathrow.
Wednesday morning's weather for the east of the region
Wednesday morning's weather for the west of the region