Rebecca Adlington

The 19-year-old from Mansfield became the first woman to top the podium since Anita Lonsbrough in 1960 with her exquisite performance in the pool.

Adlington snatched gold ahead of American Katie Hoff in a thrilling finger-tip finish in Beijing, winning by 0.07 seconds in a time of four minutes 3.22secs.

Team-mate Joanne Jackson took bronze, with the pair becoming the first British women to win an Olympic medal since Sarah Hardcastle in Los Angeles in 1984.

“We are both so happy to have two British girls on the podium,” Adlington said after the pair’s heroics. “I don’t think either of us expected it and especially a gold and a bronze, it’s absolutely amazing.

“I can’t actually believe it. It hasn’t sunk in yet. I’m just over the moon. I have just watched it back on TV and I said ‘I didn’t win that.’ Then they showed the underwater shot and my hand just got there.

“I can’t believe that I have won an Olympic medal and to have Jo there as well was absolutely fantastic. I was just so happy to be on the podium with my best friend, I love Jo to bits.

“She’s so close to me it was so great to be up there with her and to have all the team looking down on you, hearing them singing the national anthem, and not in tune at all!”

Adlington would end up leaving China with another gold medal, smashing the oldest world record in swimming in the process.

The teenager completed the distance double in Beijing’s Water Cube with an inspired swim in the 800m freestyle to leave the opposition trailing behind her by more than six seconds.

Adlington claimed the gold by breaking Janet Evans’ long-standing world record for the event – a mark of eight minutes 16.22 seconds set at the Pan Pacific Championships in Tokyo in 1989 and widely regarded as among the greatest records ever set in swimming.

Adlington, though, demolished it, touching in 8:14.10, 2.12 seconds faster than Evans’ time and well clear of second-placed Alessia Filippa of Italy and Denmark’s bronze medallist Lotte Friss.

Adlington added the 800metres freestyle Commonwealth title to her Olympic crown as she dominated from the start at the Dr SP Mukherjee Aquatics Complex in Delhi.

The then 21-year-old qualified second fastest for the final behind Wendy Trott, but it did not take long for her to assume control and she was more than two seconds ahead after 200 metres.

Adlington stretched her advantage to seven metres at the halfway point before Trott started making inroads in an attempt to chase down the double Olympic gold medallist.

But Adlington’s unassailable advantage was never seriously threatened as she touched home in eight minutes 24.69 seconds, more than two seconds ahead of Trott and Australia’s Melissa Gorman.

Adlington was relieved that she had managed to deliver after being the favourite to win the race.

“It is the mental pressure I put on myself because I want it so badly,” she said. “I have got the pressure because I have experienced the feeling of being on top and worry that I might never experience that feeling again.

“I’ve got to enjoy the feeling of wins like these.”

Adlington won four medals at the 2010 Commonwealth Games (Anthony Devlin/PA)

Adlington’s win was her third medal of the Games after previously claiming bronze in the 200m freestyle and 4x200m relay, and she went on to secure another gold medal in the 400m freestyle.

She added: “Coming here if I wanted to get a gold medal it was going to be in that event to be honest.

“I just decided to go for it and went for it from the start and at 400 saw I was a bit ahead and thought ‘I might as well stick at this pace, just keep it nice and smooth’.

“It wasn’t about the time at all there, this week has not been about times for anyone, it’s been about the racing.

“It’s been a long season so it’s nice to finish off with a gold medal.”