Cook is hoping to be selected for Beijing
Aaron Cook has become the first-ever male British athlete to win a WTF World Junior Championship taekwondo title.
The 17-year-old from Dorchester brought an early end to his -78kg final against Korean Yeong Rae while 12-8 ahead.
Liverpool's Bianca Walkden, 16, also excelled at the event in Turkey, taking silver in the +68kg category.
The World Juniors are the last major international event for Team GB before the Olympic Games in August. The squad for Beijing is named on 20 May.
Cook's win in the final followed convincing victories in earlier rounds over opponents from Afghanistan, Taipei, Russia and - in the semis - China.
He said: "China and Korea are traditionally the two strongest nations, so to beat them in the semis and final is an absolute dream - I can't stop smiling.
"I knew I was in good form from my earlier rounds but my match against Korea felt like a breeze.
"Going into the final round at 10-8 I decided not to hang around and managed to score two points quickly to take it to 12-8 which means I automatically won and the fight stopped early."
Walkden lost a tightly-contested final to a Tunisian opponent 4-3 but beat players from France, Canada and Russia to get there.