Herne Hill Harriers' young athletes won four medals at the English Schools Championships, including a gold for sprinter Marvin Popoola.
A total of 18 Herne Hill athletes represented London at Alexander stadium, where Michelle Obijiaku, Feysel Nadew and Saskia Millard also medalled.
After breezing through his heat, junior international Popoola dominated the 200m final, winning in 21.39 seconds.
Nadew also showed his growing promise by claiming bronze in the 800m, clocking a personal best of one minute 54.43secs, nudging him closer to the club's U17 record for the distance.
Another two-lap specialist, Millard, won bronze in the 800m, posting 2:12.96 in her final.
Maddie Shaw was fifth in the same race in 2.16.88, which came after a significant personal best of 2:13.41 in her earlier heat.
Obijiaku won a silver medal in the girls' shot with a throw of 14.49m, only 1cm short of her best.
She was leading the competition until the final round when she was overtaken by the other London Schools competitor, Divine Oladipo, of Cambridge Harriers, who threw a personal best of 14.92m.
Obijiaku's result led to her selection to represent England Schools in the schools international in Dublin on July 19.
She was also part of the London relay team who won their heat on Friday, helping to ensure all four London relay teams reached their finals.
Other Harriers athletes representing London in Birmingham were Alex Brown (fifth in the junior 1,500m having run a personal best of 4:40.41 in the heat), Tayo Andrews (sixth in the high jump), Anthony Flanagan (sixth in the 200m), Phillip Thomas (seventh in the triple jump), Natasha Alfred (seventh in the 100m) and Adeyinka Adeniran (sixth in the 80m hurdles).
Catriona McSorley ran a personal best of 11.68 in coming fourth in her heat of the 80m hurdles, narrowly missing qualifying as a fastest loser.
Ismail Abdulkarim and Jevonni McFarlane, meanwhile, helped London win bronze medals in the relay, but did not qualify for the 100m final.
Finally, wearing the colours of Middlesex, Lascelles Hussey was 12th in the senior 1,500m in 4.01.58.
In total, four of London’s seven individual medals were won by Herne Hill athletes.