Zara Phillips is "excited and nervous" about the London Olympic Games.

The 31-year-old sportswoman follows her mother Princess Anne and father Captain Mark Phillips in competing for Britain in eventing and although she can't wait to take part, Zara admitted the nerves are kicking in.

She told the Daily Express newspaper: "I'm very excited, honoured, but also nervous.

"A horse is a pretty unpredictable animal and it is difficult when you are trying to get it and yourself into prime fitness. You are going that extra mile; you do the extra training and, unfortunately, things can happen."

Zara - who will compete with her current horse High Kingdom - missed out on the Olympics in Athens and Beijing due injuries to her horse Toytown but says getting to carry the Olympic Torch earlier this year at Cheltenham while riding Toytown was an honour.

She explained: "I did think that day at Cheltenham might be the closest I got to London.

"I thought I might as well do something to get involved, and it was great to get Toytown involved with it as well in a small way. He loved it."