Crowds gave Zara Phillips resounding cheers as she put in a confident performance in showjumping.
The Queen's granddaughter was third up for the British equestrian eventing team as she continued her promising Olympic debut.
Supporters who had braved gloomy skies in Greenwich, south-east London, fell into a hushed silence as she tackled the course, which included jumps featuring a miniature Nelson's column and bright red post boxes. But they erupted into delighted cheers once she had finished, waving Union flags.
Members of the Royal Family turned out again to support her, with the Duke and Duchess of Cambridge and Prince Harry cheering her on.
There was still a small number of empty seats in the arena, even though organisers sold extra tickets to fill unused spaces.
Today is the decisive stage in the equestrian eventing in Greenwich Park, south-east London.
Team GB began the day in second place after Phillips and her four team mates put in fantastic performances in the cross country yesterday.
A number of riders fell on the tricky course in historic Greenwich Park, but Phillips, Nicola Wilson, Mary King and Kristina Cook all avoided penalties by finishing within a tough time limit.
William Fox-Pitt just missed out when his horse tired towards the end of the course.
Phillips follows in the footsteps of her Olympian parents the Princess Royal, who competed in the 1976 games in Montreal, and Mark Phillips, currently the US team's coach, who won a team gold in Munich in 1972.