Ellie Grant was the star performer at the Essex County Championships.
She won 10 golds, four silvers and two bronze medals in the girls 11-year-old age group.
Grant, 11, was named the top female swimmer in her age category and best overall competitor. She excelled in the 200m, her strongest event, breaking the long-standing event record time of 2:52:05.
Grant said: “I really enjoy swimming and am glad I did the event best time in my favourite stroke.”
The London Borough of Redbridge Swimming Club member is now preparing for the London Regional Championships in June.