In the battle for Olympic qualification, Ben Proud put in the third-fastest 50m freestyle title of his career to give him a shot at an elusive Olympic medal in Paris.
The 29-year-old has won medals at every major championships bar the Olympics, including world bronze this year and the 2022 world title.
He finished in 21.25 seconds in London, with Matt Richards also under the qualification time after winning the 100m freestyle earlier in the week.
“Clearly I would love to have the whole collection but I have put myself through hell trying to get that Olympic medal,” Proud said.
“You have to dream, you have to want it. But you don’t have to need it.”
In the final race of the night, Abbie Wood produced a personal best in the 200m individual medley to comfortably clear the qualification time for Paris.
Her effort of 2:08.91 would have won bronze at this year’s world championships in Doha.
“I just want to be as competitive as I was at the last Olympics because it is always more fun when you are in the mix,” said the 25-year-old, who reached the final of the event in Tokyo three years ago.
Elsewhere, Toby Robinson, who will compete in the open water events in Paris, swam a personal best to win the 800m freestyle title but was outside the required time for Olympic qualification.
Similarly, James Wilby won the men’s 200m butterfly and Keanna MacInnes the women’s 100m butterfly but missed times for Paris, although MacInnes has already qualified in the 200m event.
Tully Kearney swam a British record in the women’s para 50m backstroke and, along with silver medallist Ellie Challis, made the nomination time to put herself in contention for the Paralympics.
Brock Whiston won her second event of the week, the para 200m medley. The S8 swimmer made the nomination time, as did S6 Paralympic champion and world record holder Maisie Summers-Newton and S14 swimmer Poppy Maskill.
Scot Stephen Clegg won his fourth title of the meet in the para 50m freestyle. He did not make the nomination time for Paris but is already all but confirmed to travel to the Paralympics thanks to his other events.