Having already won the 13/14 year-old boys’ 50m and 100m events in British record times, the Devonport High School pupil added the 200m crown to his collection. He clocked 2:23.77 to finish more than a second in front of Northampton’s Harvey Freeman in second.
There was also another gold medal at Ponds Forge for Plymouth Leander’s Honey Osrin.
Osrin, who had won the 15 year-old girls’ 100m backstroke title on Wednesday added the 200m crown 48 hours later.
She stopped the clock at 2:13.48 to win by a staggering three seconds.
Osrin’s Plymouth Leander team-mates James Hart and Adam Chillingworth also added medals on Friday.
Hart took silver in the 13/14 years’ 100m butterfly with a 58.04 second swim, while Chillingworth claimed bronze in the senior men’s 200m breaststroke in 2:14.01.
Laura Stephens just missed out on claiming another podium placing. Having already bagged two golds and two bronze medals, Stephens came fourth in the senior women’s 200m backstroke.
Mount Kelly’s Sam Dailley (17/18 years’ 100m butterfly) and Kaylee Dekker (16 years’ 100m freestyle) also claimed fourth place finishes on day four of the championships.
Kelly team-mates Bella Hodges, Macy Lawrence, Athena Clayson and Lily Macleod and Leander’s Liam Davis, Tom Beasley, Duru Tanir, James Watson and Tegan Drew also qualified for finals on Friday.