EVENT 117 Open/Male 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Jake PHILLIPS | 8 | Co Leeds | 1:10.00 |
| 1 | 4 | Wilbur GIBSON | 10 | Co Leeds | 1:04.50 |
| 2 | 6 | Arda GUNGOR | 9 | Co Leeds | 58.79 |
| 3 | 8 | Harry WILKINSON | 10 | Co Leeds | 57.77 |
| 4 | 10 | Brody WRIGHT | 9 | Co Leeds | 55.42 |
| 5 | 9 | Billy PARTON | 10 | Co Leeds | 55.80 |
| 6 | 7 | Tymon PALCZYNSKI | 10 | Co Leeds | 58.54 |
| 7 | 5 | William HAMER | 9 | Co Leeds | 1:01.97 |
| 8 | 3 | Alexander LUMLEY | 9 | Co Leeds | 1:05.00 |
| 9 | 1 | Jacob BAILEY | 8 | Co Leeds | 1:20.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Max HARDCASTLE | 10 | Co Leeds | 51.30 |
| 1 | 14 | Samuel MCLARKEY | 11 | Co Leeds | 50.00 |
| 2 | 16 | Etienne WILSON | 10 | Co Leeds | 47.50 |
| 3 | 18 | Rebal ALGHOFARI | 11 | Co Leeds | 47.14 |
| 4 | 20 | Luke DARNELL | 11 | Co Leeds | 46.40 |
| 5 | 19 | Louie TRAVIS | 10 | Co Leeds | 46.67 |
| 6 | 17 | Harry SMITH | 10 | Co Leeds | 47.30 |
| 7 | 15 | Alexander MILLS | 11 | Co Leeds | 49.85 |
| 8 | 13 | Joel HARRIS | 10 | Co Leeds | 50.99 |
| 9 | 11 | Toby GILL | 9 | Co Leeds | 51.65 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | Ted TROUSDALE | 10 | Co Leeds | 45.20 |
| 1 | 24 | Leo LINES | 11 | Co Leeds | 43.90 |
| 2 | 26 | Connor MACFADYEN | 10 | Co Leeds | 42.40 |
| 3 | 28 | William WINSTANLEY | 11 | Co Leeds | 41.89 |
| 4 | 30 | Noah DE'GIOVANNI | 11 | Co Leeds | 40.40 |
| 5 | 29 | Rayan AL-SAJIR | 11 | Co Leeds | 41.20 |
| 6 | 27 | Joe DIXON | 11 | Co Leeds | 42.10 |
| 7 | 25 | Ethan HUNT | 12 | Co Leeds | 43.00 |
| 8 | 23 | Toby MANDER | 12 | Co Leeds | 44.99 |
| 9 | 21 | Sebastian BARKER | 11 | Co Leeds | 46.00 |