Without Limits: Vietnam

In the 4x4 is Vicky Balch, who lost her leg after the now well-publicised rollercoaster accident at Alton Towers in 2015. She's determined to restore her independence, but suffers an early set-back when the car's brakes fail. On the motorbikes are Louise Halvey, who has progressive hearing loss and must negotiate the chaos of Hanoi traffic;