Sir Clive Woodward has resigned as Director of Sport at the British Olympic Association after six years in the job.
He is stepping down from his post to concentrate on coaching, corporate speaking and other business interests, but Woodward will retain ties to the BOA in an ambassador role for Team GB.
He said: "I have enjoyed being a part of Team GB enormously. To have been involved in three Olympic Games, Beijing 2008, Vancouver 2010 and especially London 2012, and chef de mission for the 1st Youth Winter Games in Innsbruck this year, has been an amazing experience.
"The challenge of delivering a home Olympic Games to our largest ever Olympic Team has been exhilarating and I would like to congratulate everyone concerned on the best Olympic performance of a host nation in the modern Games era.
"Post London 2012 is the right time for me to leave the BOA, which is now taking a new direction following a home Games and I wish them all well in the future.
"I am also delighted to accept a role as a Team GB Ambassador, thisalong with my position on the IOC entourage commission means that I will be staying in close contact with the Olympic world."
The BOA is set for a re-structure involving a number of changes to senior staff with Lord Coe taking over his new role as chairman of the organisation next month when Lord Moynihan steps down.