Teenager Renat Samur won the 100m breaststroke at the Middlesex County Amateur Swimming Association championships.
The 13-year-old from Tottenham won in a time of 1.15.04.
Coach Paul Doyle said: "Renat's win is down to his hard work and competitive spirit.
"His progress has been staggering as this is really his first truly competitive season. This is his first county championships and already a winner.”
Other Haringey Aquatics swimmers included Max T Green, 12, winning a silver medal in the 100m breaststroke. Sushila Ghose-Coveney, 17, was second in the 200m backstroke.
Gareth Davies, 11, won bronze in the 200m butterfly. Alex Vonckx, 13, was third in the 100m backstroke as was Joe Northover, 25, in the 100m butterfly.
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