Andy Wood has resigned as GB badminton head coach with the Olympic Games in London only 19 months away.
Wood led the GB badminton team at the last three Olympics, overseeing an era of unprecedented success, but will not guide them on home soil in 2012.
His decision comes 11 days after GB badminton's budget for the run-up to 2012 was cut by £540,000 by UK Sport.
"Andy's extensive experience will be sadly missed," said Badminton England chief executive Adrian Christy.
"We now need to look to the future and secure the right candidate to drive the sport forward through to 2016."
Christy added: "We will commence the recruitment process with immediate effect.
"A strategic review of the 2012 and 2016 programmes is already under way, and the successful appointee will be key to driving the success of this programme."
Wood's departure follows that of performance director Ian Moss, who left his post in July by mutual consent after just 18 months in the role.
His exit led to an overhaul which saw Wood, previously national coach, appointed to the top job with the GB team and Vikki McPherson named as head of performance.
Wood coached Simon Archer and Joanne Goode to Britain's first Olympic badminton medal, a bronze in Sydney 2000, and Nathan Robertson and Gail Emms to their silver in Athens in 2004.
In the 2006 World Championships, he coached all four of the finalists in the mixed doubles, with Robertson and Emms winning gold and Anthony Clark and Donna Kellogg silver.
Woods was named Sports Coach UK, Male Coach of the Year later that year.
McPherson said: "Under Andy's leadership in the training hall we had already started to make significant progress in creating a driven, accountable and performance focused environment.
"We will ensure that momentum is retained in the lead up to the year-long Olympic qualification programme for London 2012 commencing in May 2011."
McPherson added: "I'm very disappointed to have only had the opportunity to work with Andy for such a short period of time, however fully respect his decision.
"With a strong coaching and support staff in place there is a real opportunity for the successful candidate to build on this momentum, lead the team into 2012 and lay the foundations to take us through until 2016."