Clare Balding, Alex Scott and guests reflect on the events making the headlines on day 12. Katarina Johnson-Thompson and Sky Brown were among the star British names competing today. Johnson-Thompson began her pursuit of gold in the heptathlon, while the country's youngest-ever summer Olympian, 13-year-old skateboarder Brown, was vying for a place on the podium just a year after suffering multiple injuries in a horrific fall.