S4.E21 ∙ 9 Year-Old BMX Prodigy

Dan Snow, Anita Rani and Ade Adepitan go behind the scenes to reveal the hidden systems and armies of people running some of the greatest cities on earth.

Monty Halls explores Australia's Great Barrier Reef, one of the natural wonders of the world and the largest living structure on our planet. Monty explores its full 2000-kilometre length, from the wild outer reefs of the Coral Sea to the tangled mangrove and steaming rainforest on the shoreline; from large mountainous islands to tiny coral cays barely above sea level; from the dark depths of the abyss beyond the reef to colourful coral gardens of the shallows.

Alexia Putellas' inspiring journey as FC Barcelona captain and Spanish national team star, pioneering women's soccer. Explores Barça's triumphant season and Spain's Euros campaign, showcasing her impact on and off the pitch.

Michael Portillo travels around South-east Asia, guided by his 1913 Bradshaw's Handbook on a 2,500-mile railway adventure across six countries.

Uncovering the hidden world of underground bare-knuckle fighting in Britain. With access to a fight club where men from all walks of life compete against each other in brutal and bloody battles.

Every sport has it's unique set of injuries - however, a fighter deals injury them more often than the average athlete. After every fight a fighter must push themselves to get healthy to be ready to fight again. After the Fight looks at the physical and mental struggles of a fighter after a fight and how they begin to recover.