Charlotte Dujardin won leg four of the FEI Dressage World Cup ©FEI

Britain's Charlotte Dujardin won leg four of the International Equestrian Federation (FEI) Dressage World Cup at the London International Horse Show with a grand prix freestyle personal best of 89.040 per cent.

It was the three-time Olympic champion's last ride with Dutch warmblood Gio, who has been sold.

Dujardin's compatriot Charlotte Fry won second place with 81.945 per cent on another Dutch warmblood, Dark Legend, while Germany's sole representative Frederic Wandres claimed third after achieving 80.260 per cent.

Wandres remains in the lead of the Western European League's overall standings, whicj will determine qualification to the FEI Dressage World Cup Finals in Leipzig.

The German has 65 points, with Dutch rider Thamar Zweistra in second place and Morgan Barbançon of France in third with 43 and 40 points, respectively.

"I’ve just finished the most incredible year," said Dujardin.

"He truly is the most amazing horse.

"What a legend."

Dujardin had ridden Gio at the Tokyo 2020 Olympic Games as she won two bronze medals in the team and individual dressage events.

The event was moved from its traditional Olympia venue to the ExCel London and was attended by a capacity crowd.

A total of eight nations were represented with 15 horse-and-ride combos, six of which came from the host country.

With the cancellation of the Mechelen show at the end of the month due to COVID-19 concerns, Amsterdam is set to stage the next Dressage World Cup event from January 27 to 30 2022.