Champion Ben Ainslie in the 2004 Olympics in Athens. He's had an almost perfect gold win streak since 1996.
http://www.dailymail.co.uk/sport/olympics/article-1297845/London-2012-The-Brits-golden-Games-vision.html
Anna Tunnicliffe is the 2008 Bejing Olympics Women's Singles champion.
http://olympicsailingtickets.blogspot.com/2012_06_01_archive.html