We take a look at Sir Dave Brailsford's life and career after he left his post as performance director at British Cycling to concentrate on his role with Team Sky.
The news brings an end to a phenomenal 11 years at the helm of the British Olympic cycling, achieving great success at the Beijing and London Games.
1965: Born February 29, Derby.
1984: Leaves home in Deiniolen, north Wales, to be a competitive cyclist in France.
1988: After four years racing in France, returns to the UK to study sports science and psychology. Subsequently studied for an MBA at Sheffield Business School.
1998: Joins British Cycling on a consultancy basis following the introduction of Lottery funding. Then became programmes director.
2003: Succeeds Peter Keen as British Cycling performance director.
2004: Bradley Wiggins wins individual pursuit gold and Chris Hoy one-kilometre time-trial gold at the Athens Olympic Games.
2005: Awarded MBE in Queen's Birthday Honours.
2007: July - Reveals his ambition to launch a British road racing team to compete at the Tour de France.
2008: August - Britain dominate on the track at the Beijing Olympic Games, winning 7 out of 10 titles, including three for Hoy. Nicole Cooke wins road race gold to make it a total of eight Olympic titles were claimed at the Games by GB's cyclists.
December - Named coach of the year at the BBC Sports Personality of the Year awards. Made a CBE in Queen's New Year Honours.
2009: February - Vision of a professional British road squad becomes reality with Team Sky announced. Takes position of team principal, combining role with his position as British Cycling performance director.
July - Wiggins finishes fourth in the Tour de France, beginning a transfer tussle which ends when he signs for Team Sky in December.
2010: May - Wiggins wins the opening stage of the Giro d'Italia to take the Tour of Italy leader's pink jersey and give Team Sky a first Grand Tour stage win at the first attempt.
July - Wiggins finishes 24th in Team Sky's debut Tour de France after struggling in the mountains. The result is updated to 23rd when Alberto Contador was stripped of the title for a doping offence, but leads to a period of introspection at Team Sky, led by Brailsford.
September - Withdraws Team Sky squad from the Vuelta a Espana as carer Txema Gonzalez dies following a bacterial infection.
2011: July - Norway's Edvald Boasson Hagen wins two stages of the Tour for Team Sky's first victories, but Wiggins crashes out with a fractured collarbone.
September - Chris Froome finishes second in the Vuelta, one place ahead of Wiggins, as two Britons make a Grand Tour podium for the first time. The duo then help Mark Cavendish become world road race champion as Brailsford's approach begins to bear fruit on the road.
2012: April - After a quiet period between Olympics, the track team step up with five wins from the 10 Games events at the Track Cycling World Championships in Melbourne.
July - Wiggins becomes the first British winner of the Tour as Team Sky hit their target two years ahead of schedule.
August - Wiggins wins road time-trial gold and Britain's track cyclists claim seven victories from 10 events as the hosts equal their Beijing haul of eight golds.
October - Has to defend Team Sky's zero tolerance, rather than rehabilitation, approach in the wake of the Lance Armstrong scandal.
November - Commits to dual roles of British Cycling performance director and Team Sky principal until Rio de Janeiro in 2016.
December 16 - Named coach of the year at the BBC Sports Personality of the Year awards.
2013: July - Froome becomes second straight British winner of the Tour de France.
December 28 - Awarded a knighthood in the New Year Honours list.
2014: April 11 - Leaves his role as British Cycling performance director, Press Association Sport understands.