The girl on the dancing horse: Charlotte Dujardin and Valegro

Greenwich 2012, the Olympic games in London. Charlotte Dujardin enters the ring riding the Dutch warmblood Valegro for the individual dressage event.

Working through a series of intricate movements, they have the audience spellbound.

Just over 6 minutes later and the pair had delivered a routine with a score of 90.089%.

It was an Olympic record and only the third score in history over 90 per cent.

This is the story of how an outsider and an unconventional horse changed the world of equestrian sport.