The boys 4x100m Freestyle relay team won gold on day three of the Youth Olympic Games in Nanjing.
The team of Duncan Scott, Martyn Walton, Luke Greenbank and Miles Munro took five seconds off their qualifying time to take the title in 3:21.19.
Italy was second and Germany took third.
Scott said: “I am so happy that we have won the gold medal and I can’t quite believe it to be honest.
“We knew we had a chance going into it as Great Britain won the same gold at the European Junior Championships earlier in the year but to have an Olympic gold too is amazing.
“We all dug deep and gave it everything we had because we knew it was going to be tough and we were going to had to fight for it.
“We have all had a tough week so far but this is a great result and one we can all be really pleased with.
“There is also a mini competition between the boys and girls in Team GB and they won two silver medals the day before so we had to come out and win gold really.”
Earlier in the session Munro and Scott both booked places in the 50m Freestyle final, with Scott swimming a 22.78 PB. Georgina Evans also qualified for the 100m Breaststroke final.