Newman-Baronius, who won gold in the 200m individual medley and silver in the 200m freestyle, had equalled the butterfly world record of one minute 3.33 seconds, held by Russian Valeriia Shabalina, at the Aquatics GB Championships earlier this month.

On Saturday, Newman-Baronius started strongly against Shabalina, who is competing as a Neutral Paralympic Athlete, and was more than a second ahead by halfway and maintained her advantage to win in 1:03.83 with her rival clocking 1:06.47.

Ellard, who like Newman-Baronius, is set to make his Paralympic debut in Paris, was fastest in the world in the butterfly this year and showed his class to win in 55.72 – comfortably clear of Ukraine’s Dmytro Vanzenko (57.48)

It adds to the 200m freestyle gold, 100m backstroke silver and 200m medley bronze he had already captured earlier in the week.