Bear Grylls greets celebrating scouts at Windsor Castle

Bear is chief scout and regularly attends the annual National Review of Queen's scouts held at the castle every April.

All 500 of the young people who came from all over the country this year were aged between 16 and 25 and had completed a wide range of challenges. The Duke of Kent inspected their lines.

Bear said: "All these young people have lived the adventure of a lifetime to achieve their Queen’s Scout Awards and I admire that spirit so much.

"They are huge inspirations to the other 550,000 Scouts in the UK.”

The Windsor Castle event has been held regularly since 1934 on the Sunday nearest to St George's Day.

Since the Queen’s Scout Award was instigated, more than 100,000 have been presented to young men and women for outstanding personal achievements.