In the penultimate leg of their journey, the remaining four teams head through the dense forests and bustling metropolises of Cambodia and Vietnam.
Simon Reeve continues his epic journey. In the last episode of the series, he samples local delicacies in Laos and meets high achieving children in Taiwan.
Rick Stein's culinary journey continues as he travels down the Mekong River to Vietnam, where the food includes lots of fish and flavoursome soups made with beef and rice noodles.
Simon Reeve heads to Vietnam to uncover the stories behind the morning pick-me-up. He travels to the central highlands, where he meets the people who grow, pick and pack coffee.
By Bui Thu
BBC News Vietnamese
It started with a 999 call from a lorry driver in Essex and ended in one of the UK’s biggest ever police investigations, a hunt for those responsible for the deaths of 39 Vietnamese migrants.
By Bernd Debusmann Jr
BBC News, Washington
By Jonathan Head
South East Asia correspondent
By Beth Timmins