Fire crews are still at the scene of a massive blaze in Northfleet as investigations continue to establish how it started.

One engine remains at Northfleet Industrial Estate, damping down hotspots but the building is likely to be demolished.

Fire broke out at Shellen's in Lower Road at 4am yesterday (Saturday). At the height of the blaze about 50 firefighters from across north Kent were called to tackle the incident. There are no reported injuries.

Shellen's designs, manufactures and installs security doors.

Eight engines were on the scene at the height of the fire. That was scaled back to five pumps at about 11am and at 1pm, there were two vehicles on site.

The fire broke out in Lower Road just after 4am. A height vehicle was also used to hose down the flames from the A226.

A wall is known to have collapsed and several roads were closed.

An eyewitness, who works on the estate, said the fire could be seen from the Ebbsfleet International Station roundabout.