Bear Grylls reveals his pride as son Marmaduke, 18, heads off on a four-month trip round Asia after 'working hard' in order to pay for it himself
The TV star has been married to Shara Knight since 2000 and has sons Jesse, 21, Marmaduke, 18, and Huckleberry, 15  with her.
Who is on Celebrity Bear Hunt? The line-up revealed as show begins on Netflix
Celebrity Bear Hunt is set to premiere on Netflix this week, which will see a host of famous faces dropped into the wild.