An investigation is under way to determine the cause of a huge blaze which devastated an 18th century stately home.

Flames at Clandon House. Credit: Steve Parsons/PA Wire

At least one wing of the Grade I listed building has been gutted and the roof was caved in.

The fire is believed to have started in the basement of the National Trust property before spreading to the roof.

Around 80 firefighters battled through the night to bring the flames under control at the estate near Guildford in Surrey.

Dozens of firefighters battle a blaze at Clandon Park Credit: Steve Parsons/PA Wire

Many of the irreplaceable items were damaged or destroyed, with a salvage operation underway to try and save as much as possible.

Staff and volunteers were safely evacuated when the blaze broke out just after 4pm yesterday.

Flames at Clandon House. Credit: Steve Parsons/PA Wire

Clandon House was built in the 1720s and contains a large collection of 18th century furniture, porcelain and textiles.

Dozens of firefighters battle a blaze at Clandon Park Credit: Steve Parsons/PA Wire

The full extent of the damage is not known but work is on-going to salvage what can be salvaged from inside.

Surrey Fire and Rescue Service
Dozens of firefighters battle a blaze at Clandon Park Credit: Steve Parsons/PA Wire