Welsh fighter Jade Jones on Thursday made history by becoming Britain's first Olympic taekwondo champion.
The 19-year-old, from Flint, North Wales, claimed a gold medal at the ExCel Centre in east London after beating China's Yuzhuo Hou 6-4 in the women's 57kg final.
The teenager, whose grandfather Martin Foulkes got her to start the sport aged eight to keep her off the streets, was given rapturous applause after she claimed the prize.
Jones threw her helmet in the air and did a lap of honour carrying the Union Flag after the final bell.
Earlier on Thursday she pulled off a shock victory over the world number one Tseng Li-Cheng of Chinese Taipei to earn a place in the final.
The crowd chanted "GB" and waved a sea of Union Flags at the jubilant teenager.
Earlier in the evening, Britain's Martin Stamper narrowly missed out on a medal.
The 25-year-old from Liverpool was beaten 5-3 by Afghanistan's Rohullah Nikpah in the men's 68kg bronze medal match.
Jones said: "It feels crazy. It's amazing and the crowd's amazing."
She called her coach Paul Green "a legend", adding: "Without him I wouldn't be where I am today."
Jones added: "Before I came out I thought, 'I'm not letting her beat me here in front of the home crowd'.
"To be the first athlete to win Olympic gold is amazing."
Jones was beaming as she accepted her medal.
As the National Anthem was played she waved her hands, encouraging the audience to sing along with her.
Spectators said it was "amazing" to see the teenager take home the medal.
Welsh fan Gemma Morgan, 39, who attended the event with her 10-year-old daughter Bethany, said: "It was absolutely brilliant.
"Not only is she Welsh, she is 19 and she has got a fantastic future ahead of her.
"I knew she had a chance at it. I brought my daughter along and she is inspired."
Ms Morgan, who lives in Reigate, Surrey, but is originally from Rhwibina near Cardiff, added: "The GB support has been fantastic."
Nick Frearson, 39, from Hampton Court, Surrey, said: "It was really great to see.
"It was obviously really quite close but she was amazing and has done us all proud.
"We were really lucky to get these tickets and had no idea we'd get to see Team GB win a gold."
Jake Hosemann, 21, from Fleet in Hampshire, said: "The atmosphere when she won was fantastic. It was deafening."