Federer, fresh from his fifth consectutive US Open title in New York on Monday where he beat Britain's Andy Murray in the final, has once again emphasised how excited he is by the prospect of playing at the Games in London.

He said: "I definitely set the goals till the Olympics in four years time in London and that's going to be at Wimbledon which is an incredible combination for playing.

"Olympics Games at Wimbledon and from them on I would think.

"I would like to play as long as possible, as long as the body allows it.

"So I would like to play as long as possible.

"I can play through many generations like golfers do.

"I get inspired by playing for a very, very long time and things like that.

"So I am looking forward to playing for many more years to come.

Todd, meanwhile, who returned to competition after an eight-year hiatus for his sixth Olympics, confirmed today he was aiming to compete In London when he will be aged 56.

He and his mount Gandalf finished 18th in the individual eventing standings and helped New Zealand to fifth in the team standings at Beijing.

New Zealand Bloodstock Ltd who backed his Beijing campaign said it would continue to support Todd in his bid to make London.

Todd, who is godfather to one of Sebastian Coe's children, said he had been surprised by how much he enjoyed being back in international competition.

He said: "I saw Beijing as something of a challenge, but I hadn't counted on how much I would enjoy myself on the way.

"It's been great to be back on the circuit and I don't want to get another 10 years down the line and feel that I have missed the opportunity to compete again.

"New Zealand Bloodstock has kindly agreed to continue its sponsorship and I am currently looking at horses to run alongside Gandalf, who has really proved himself as being top class.

"As far as plans go, I'll aim for Badminton next year and possibly Burghley, with the World Equestrian Games in Kentucky being my next big target.

"It was my first international event 30 years ago, so holds good memories for me and I would be very keen to go back."

Todd, winner of Olympics equestrian gold medals on Charisma at Los Angeles in 1984 and Seoul in 1988 will remain based in New Zealand.