Desiree Burch joins Ben Shires and Haruka Kuroda to present. British Olympian Claire O'Hara attempts a kayaking record with her husband in Sydney, Australia. And drag racer Tom Bagnall goes for glory in a go-kart - with a jet engine on the back! Also, we welcome back our Officially Competitive legends - Cherry, Ray and Steve - competing for records in front of a live audience in our secret bunker.

The Officially Competitive heroes are engaged in a sparkly contest to move glitter with a teaspoon, then later one of them faces a trek to the gruesome Gunge Tank of Doom. Also, a flying quad bike from America, multi-medal-winning Olympic gymnast Becky Downie defies belief on a balance beam and two monster trucks rampage around a field in Australia - on two wheels.

Australia's all-time greatest record breaker tries to catch the fastest tennis ball ever, at over 200 kph. An American daredevil dunks a doughnut in a mug of coffee via a bungee jump, and Britain's best stunt car driver Alastair Moffatt, returns, aiming to drive a car on two wheels around cars driven by his entire family. In the bunker, the Officially Competitive legends attempt to become the world's fastest at running with a balloon between the knees.