LOTTIE Wynne-Jones broke an Oxfordshire & North Bucks record as she claimed victory at the ASA National County Team Championships in Sheffield.
The 13-year-old, from Finmere, who swims for Milton Keynes, triumphed in the 100m butterfly at Ponds Forge.
Wynne-Jones broke a 16 and under county junior record, which had stood for five years, with 1min 2.86secs.
It is also the fifth-fastest swim of all-time by a GB competitor in the category.
She said: “I love swimming for my county. The atmosphere was electric and our team spirit amazing.”
Oxon & North Bucks finished ninth overall.
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