31 July 2012 Last updated at 17:28 GMT

Zara Phillips: Husband Mike Tindall reveals viewing nerves

Mike Tindall

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Gloucester centre Mike Tindall tells BBC Sport he felt a "knot in his stomach" watching his wife, Zara Phillips, perform in the show jumping at London 2012.

The Queen's granddaughter went on to win silver as part of the three-day eventing team.