Two British women are bidding for Olympic history today.

Nicola Adams will fight to become the first female Olympic boxing champion and dressage rider Charlotte Dujardin could become only the fourth British woman to win two golds at one Games.

Adams could realise her 17-year dream as she takes on China's Ren Cancan at the ExCel Centre. It will be a key moment for women's boxing, which is part of the Games for the first time this year.

Her mother, Dee, said: "I am not as anxious like I was before she got a guaranteed medal. I know she is on the podium. I know that she is going for gold and she can do it."

Adams, 29, from Leeds, said: "I've been training for this moment since I was 12 years old and to think it is finally here is just incredible."

The equestrian arena will be the centre of attention once more as members of Britain's successful dressage team go for individual gold, with Dujardin favourite. If she claims victory she would join Dame Kelly Holmes, Rebecca Adlington and Laura Trott as double Olympic gold medal-winning women.

There are also high hopes for taekwondo fighter Jade Jones, from North Wales, who has cruised into the quarter-finals of the women's under-57kg at ExCeL, with the finals tonight.

But there was disappointment for Keri-anne Payne who just missed out on a medal in the 10km outdoor swimming. A massive crowd, including Prime Minister David Cameron, watched her battle hard to fourth place in Hyde Park's Serpentine.

Also in the crowd were her GB swimming team-mates, including fiance and fellow swimmer David Carry, as well as best friend Adlington. A tearful Payne praised the "fantastic support", adding: "Fourth in the world is not too bad, but not really what I wanted."

A highlight of the day will come as Usain Bolt takes to the track in the 200m men's final at the Olympic Stadium. Bolt sealed his place in Olympic history on Sunday as he became only the second man to defend the 100m title. The Jamaican clocked a new Games best of 9.63 seconds on his way to gold.