The Brownlee brothers have raced to Olympic triathlon glory in one of the most dramatic races yet at London 2012.

Alistair Brownlee took gold and his brother Jonny won bronze despite being given a 15-second penalty.

As he closed in on victory Alistair grabbed a Union flag from the crowd, wrapped it around his shoulders and walked triumphantly across the finish line in Hyde Park. He waited to embrace his brother who had to fight incredibly hard to overcome the penalty given for mounting his bike too quickly after swimming the Serpentine.

And there was further success in Weymouth as Nick Dempsey took silver in the men's windsurfing.

Alistair Brownlee's gold medal takes Britain's tally to 19 - the same won in the 2008 Beijing Games, which were the country's most successful for a century. With five full days of competition left it seems certain that Team GB will beat its Beijing haul of 47 medals. The team now has 43 - 19 gold, 12 silver and 12 bronze.

Britain's best-ever Olympics were the London Games of 1908 when it claimed an unsurpassable 146 medals - 56 golds, 51 silvers and 39 bronze. Britain had never won a triathlon medal before but Alistair Brownlee was favourite, having dominated triathlon over the last four years.

Elsewhere, Phillips Idowu, the so-called "Invisible Man" of British athletics, crashed out of the triple jump. The controversial 33-year-old Beijing silver medallist failed to jump far enough to qualify automatically for Thursday's final.

Idowu, who is suffering from a trapped nerve and has been in dispute with British athletics bosses, only arrived at the Athletes' Village on Sunday. Idowu, from east London, said: "That wasn't me out there today - I have competed for 12 years and I can't remember a time when I have performed that badly."