Thousands of Scouts and Guides from all over the globe will get a big surprise today... when explorer Bear Grylls and comedian David Walliams drop in on them.

Chief Scout Bear and the comedy actor flew in by helicopter to the Kent Showground.

The scouts are taking part in the 5th International Scouting Jamboree.

Some 5,500 boys and girls from 30 countries are at the eight-day camp, where they are being looked after by more than 700 adult volunteers.

A mini city has been created for the Scouts with its own supermarket, hospital and radio station.

Around half of the Scouts and Guides present are from Kent, with others from the rest of the UK. But there are also contingents from Sweden, Germany, New Zealand and many more countries.

The famous pair took part in a range of activities with the scouts, including treasure hunts, inflatable games, speed climbing and surf simulators.

Jamboree director Andy Trill said: “The Jamboree is the culmination of four years of planning. It is the biggest in the UK this year and I know all the young people will be telling their jamboree stories long after they leave.

“An international jamboree gives young people the chance to learn about other cultures, faiths, environments and communities, as well as having a lot of fun.”

The Scouts have had a huge programme of activities to keep them busy, including climbing, power karting, sailing and archery.

The camp breaks up today.