On a night when nerves were truly tested by the close confines of the arena, the pure class of the 2012 Olympic individual and team gold medallists shone through as Britain’s Charlotte Dujardin and Valegro topped the fifth leg of the Reem Acra FEI World Cup Dressage series at Olympia in London. The Grand Hall at this prestigious venue is aptly named, but it is a very snug fit for the dressage ring at the Christmas fixture which attracts packed houses throughout a hectic week of great sport.