Police are treating a fire at a Dartford industrial park as suspicious.

Dartford and Thames-side firefighters were called to an out building at the Howard Hunt site in Bridge Close, off Clipper Boulevard, at 4.50am yesterday.

The Queen Elizabeth II bridge was closed while the blaze was put out at the print and direct mail company's site for safety reasons .

Kent Police were also called at 4.57am to the blaze, which is now being treated as suspicious.

Kent Fire and Rescue and Kent Police are working together to determine the cause.

No-one was hurt in the fire.