Between 2001-2003 four UK sporting organisations were world class - Rowing, Cycling, Sailing and Rugby Union (England).
Between 2004-2010 Rowing, Cycling and Sailing still led UK sport by the proverbial mile but there were signs of progress at:
** Swimming (Beijing 2008)
** Cricket (20/20 World Champions, 2010),
** Track & Field (Record medal haul at the European Championships, Barcelona 2010 though only a handful of UK athletes recorded top 6 world times)
** Golf (harder to gauge but UK & Irish golfers feature more heavily in World's Top 20)
and though UK Sport is cracking the whip as we head towards London 2012 so that more sports understand what is needed to be world class there have been no big breakthroughs though lots of lesser ones e.g. Boxing and Rugby League.
Our major sport - soccer - has simply not kept paced with developments elsewhere despite it having an unlimited call on funding. Ditto Tennis.