Before 5pm, Sport

A six-mile adventure in aid of the charity involving cross-country racing, an army assault course, and a whole host of other demanding challenges, with a hog roast at the end to reward you.

An opportunity to view combat and sword demonstrations.

Rugby stars from Scotland, Wales, Ireland and England join forces to wreak havoc down under on the hotly anticipated 2013 Lions Tour.

For the fifth year running, Hurlingham Park will host the world's top polo players as they battle it out in a furious display of horsemanship. With bars, fresh food outlets and shopping village all open.

A cross country bike ride through the lesser known natural parts of the Tweed Valley in a route that takes in forest tracks, drove roads, well trodden hill paths and rarely used ancient passes. The route is extensive and can be tricky so come fully prepared for a self-guided, self-sufficient day out.

Rugby stars from Scotland, Wales, Ireland and England join forces to wreak havoc down under on the hotly anticipated 2013 Lions Tour.

The oldest golf championship in the world returns to one of the oldest clubs in the world. The course is being tweaked for the occasion, so players should have a few interesting challenges.

Race supporting The National Osteoposis Society, with £2 the entry fee going directly to them. Prize for the best orange-dressed person.

Traditional Highland games featuring running, cycling, heavy events, Highland dancing, pipe band contests and more.

While children across London are eagerly waiting to unwrap their presents, members of the Serpentine Swimming Club are preparing to swim their traditional 100-yard Christmas Day race. Swimmers have met in London's Hyde Park on Christmas morning since 1864 to compete in the race.