Theresa May has now signed a letter to trigger Article 50, the start of the official process to leave the EU.
Ben Ainslie Retires From Olympic Sailing
Four-time Olympic sailing gold medallist Ben Ainslie has announced he will not compete at Rio 2016.
The 35 year old from Lymington has decided to call time on his glittering Olympic career to focus on his America's Cup campaign.
Ainslie won the Finn class at London 2012 - his fourth gold medal in his fifth Games - but will not defend that title in Rio.
''It fills me with both relief and sadness to write these words but I can now officially confirm that I have donned my Team GB tracksuit for the last time,'' Ainslie told the Daily Telegraph.
''No more Olympic villages. No more opening or closing ceremonies. After almost 20 years entirely dedicated to the pursuit of gold, taking in five Olympic campaigns, I have decided I will not attempt a sixth at Rio de Janeiro in 2016.''
Ainslie won silver at his first Olympics in Atlanta in 1996 in the Laser class and took Laser gold in Sydney four years later. He then moved to the Finn class taking gold in Athens, Beijing and London.
Ainslie did not announce his Olympic retirement immediately after winning in Weymouth. Instead he waited for the International Sailing Federation (ISAF) conference in Dublin to find out which classes would be on the Olympic programme for Rio.
He admits that had the Star two-handed dinghy been reinstated he might have considered 'giving that a go' but it was not.
''Because of the wear and tear of a lifetime spent sailing, particularly on my back, which was a real issue this summer, it was always going to be an uphill struggle to do the Finn again in Brazil,'' he said.
Ainslie will now concentrate on an America's Cup World Series campaign with JP Morgan BAR.
''I feel increasingly confident that we can one day challenge for the America's Cup proper. Not at next year's event in San Francisco - that will be too soon - but perhaps the one after that.''
BEN AINSLIE FACTFILE
1977: Born on February 5 in Macclesfield, Lancashire. His father, Roddy, sailed in the first Whitbread Round the World Race.
1996: Having won the European Championships and finished third in the Laser World Championships, he goes on to win silver at the Olympic Games in Atlanta aged 19.
1997: Finishes third in the Laser World Championships and takes bronze at the European Championships.
1998: Wins both the Laser European and World Championships.
1999: Ainslie is named British Yachtsmen of the Year and World Sailor of the Year, having won the Europeans and World Championships yet again.
2000: Sees off competition from Brazil's Robert Scheidt to win Laser gold at the Sydney Olympics. Also wins Laser Europeans and finishes third in the Laser World Championships. Named British Yachtsmen of the Year and made MBE in New Year Honours list.
2002: After spending 14 months with the 'One World Challenge' America's Cup campaign, Ainslie moves to the Finn class. He wins the first of what prove to be many World Championships in the division and takes the Finn Europeans. Becomes British Yachtsmen of the Year and World Sailor of the Year.
2003: Takes another Finn Gold Cup and another Finn European crown.
2004: Ainslie's dominance of the Finn class continues as he wins a second Olympic gold medal in Athens, Greece. Also takes the World and European crowns as he is named British Yachtsmen of the Year for a fourth time. Inducted into the Finn Hall of Fame.
2005: Ainslie racks up a fourth successive Finn Gold Cup and receives OBE. He also wins the Finn Europeans.
2008: After re-entering the America's Cup arena with Emirates Team New Zealand, he returns to the Olympic circuit to win an unprecedented fifth world title, European title and Olympic gold in Qingdao, China. He is named British Yachtsmen of the Year for a fifth time, World Sailor of the Year yet again and made CBE.
2011: Fights off tough competition to be selected for the British sailing squad in the Finn class. Year ends in controversy at the ISAF World Championships in Perth, Australia, where he is involved in an altercation with a media boat.
2012: In January launches Ben Ainslie Racing, a new team that will initially compete in the next edition of the America's Cup World Series along with plans to join ORACLE Racing for the defence of the 34th America's Cup. Having recovered from back surgery, he wins the Finn Gold Cup for a record sixth time in Falmouth, Cornwall.
August 5 - Wins fourth Olympic gold medal, triumphing in the Finn class on home waters off Weymouth at the London 2012 Games. With four golds and a silver, Ainslie becomes the most successful sailor in Olympic history.
November 27 - Announces that he will not compete at Rio 2016 bringing down the curtain on a glittering Olympic career and says he will now focus on his America's Cup campaign.
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