Olympia Horse Show 2015: Charlotte Dujardin and Scott Brash head field

Olympic champions and world number ones Charlotte Dujardin and Scott Brash head the field at the London International Horse Show at Olympia on Tuesday.

Dujardin, 30, set world records in winning the freestyle dressage and grand prix events last year.

The double Olympic and world champion will ride Uthopia instead of her usual horse Valegro in Wednesday's freestyle.

Brash, the first rider to complete the sport's grand slam, competes in the World Cup showjumping on 20 December.

Four members of the Whitaker family, John, Michael, Robert and William, are also set to compete during the week, while Ben Maher, another London 2012 gold medallist, seeks to defend his Grand Prix title on Monday, 21 December.

BBC coverage

Wednesday 16 December

Live coverage of the World Cup dressage freestyle

Red Button, online & connected TV from 20:00 to 22:35 GMT

Thursday 17 December

Live coverage of the Olympia Puissance high-jump competition

Red Button, online & connected TV from 21:00 to 22:15 GMT

Sunday 20 December

Live coverage of the latest World Cup leg, plus highlights of the puissance high-jump competition

BBC Two, online & connected TV from 13:45 to 16:30 GMT

Monday 21 December

Live coverage including the Olympia Grand Prix

Red Button, online & connected TV from 18:45 to 22:25 GMT

Wednesday 23 December

Highlights of the week, including the Olympia Grand Prix

BBC Two HD, online & connected TV from 11:00 to 12:00 GMT

All programmes times subject to change