EVENT 402 Boy 10 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | T Nedelcu-Paveliuc | 10 | Wellingboro | 1:56.39 |
| 3 | 2 | Thomas McMaster-Irons | 13 | Modernian | 1:54.41 |
| 4 | 3 | Henry Tomlin | 13 | Lincoln Vulc | 1:51.55 |
| 5 | 4 | Zachary Fraser | 12 | Wellingboro | 1:51.51 |
| 6 | 5 | Oliver Meier | 12 | Modernian | 1:50.35 |
| 7 | 6 | Aidan Penney | 12 | Wellingboro | 1:48.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Jack Webb | 11 | Northampton | 1:47.99 |
| 2 | 8 | Sebastian Casey | 12 | Co Leicester | 1:46.86 |
| 3 | 9 | Zak Anderson | 15 | Wellingboro | 1:45.80 |
| 4 | 10 | Themba Lungu | 13 | Lincoln Vulc | 1:41.36 |
| 5 | 11 | Jack Hicks | 13 | Lincoln Vulc | 1:40.35 |
| 6 | 12 | Michal Wojcik | 13 | Northampton | 1:39.66 |
| 7 | 13 | Ronnie Booker | 13 | Wellingboro | 1:39.34 |
| 8 | 14 | Toby Fletcher | 19 | Market Har | 1:38.93 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Laurenzio Ciolan | 12 | Northampton | 1:38.00 |
| 2 | 16 | V Bramley - Howell | 12 | Leic Peng | 1:34.00 |
| 3 | 17 | Freddie Burdett | 12 | Leic Peng | 1:32.98 |
| 4 | 18 | Berkley Barnicoat | 13 | Modernian | 1:30.22 |
| 5 | 19 | Oliver Ashman | 12 | Co Leicester | 1:26.89 |
| 6 | 20 | Maximilian Talalayenko | 15 | Northampton | 1:26.73 |
| 7 | 21 | Archie French | 13 | Lincoln Vulc | 1:26.55 |
| 8 | 22 | Daniel Hepplestone | 12 | Lincoln Vulc | 1:26.21 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Edward Oscroft | 13 | Northampton | 1:23.30 |
| 2 | 24 | Emerson-Blu Gupwell | 12 | Co Leicester | 1:21.92 |
| 3 | 25 | Harvey Brind | 14 | Co Leicester | 1:16.34 |
| 4 | 26 | Lucas Granville | 14 | Bramcote | 1:16.20 |
| 5 | 27 | Adam O'Neal | 14 | Modernian | 1:15.77 |
| 6 | 28 | Louis Booker | 15 | Wellingboro | 1:14.51 |
| 7 | 29 | Finn Reed | 15 | Loughborough | 1:12.84 |
| 8 | 30 | Connor Allen | 15 | Wellingboro | 1:12.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Harry Faulkner | 16 | Wellingboro | 1:09.77 |
| 2 | 34 | Jacob Milward | 15 | Radford | 1:08.80 |
| 3 | 36 | Ethan Ford | 15 | Co Leicester | 1:07.46 |
| 4 | 38 | Oliver Silver | 16 | Radford | 1:06.75 |
| 5 | 37 | Alfie Silver | 16 | Mansfield | 1:06.75 |
| 6 | 35 | Harry Fleet | 16 | Co Leicester | 1:08.27 |
| 7 | 33 | Bobby Phillips | 17 | Wellingboro | 1:09.17 |
| 8 | 31 | Jack Bignell | 14 | Northampton | 1:11.00 |