EVENT 102 Boys 11/13 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Harry McKeaney | 11 | Nova Cent'n | 1:24.33 |
| 4 | 3 | Ethan Ford | 11 | Co Leicester | 1:24.16 |
| 5 | 2 | Daniel Oyaide-Nicholls | 12 | NottmLeander | 1:24.20 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 5 | Oliver Kang | 12 | Co Leicester | 1:23.05 |
| 3 | 7 | Samuel Leveridge | 12 | Calv Bing | 1:22.39 |
| 4 | 9 | Archie Heron | 12 | Co Derby | 1:21.60 |
| 5 | 8 | Isaac Smith | 12 | Worksop | 1:22.00 |
| 6 | 6 | Lewis Fitch | 11 | Co Leicester | 1:22.69 |
| 7 | 4 | George Owen | 11 | Bassetlaw SS | 1:23.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 11 | Jack Coptcoat | 12 | Northampton | 1:20.42 |
| 2 | 13 | Augustus Sefcik | 11 | NottmLeander | 1:19.90 |
| 3 | 15 | Tomos Beech | 12 | Nova Cent'n | 1:19.50 |
| 4 | 17 | Alex Sadler | 11 | Deepings | 1:19.50 |
| 5 | 16 | Zak Frisby | 11 | Radford | 1:19.50 |
| 6 | 14 | Noah Tannahill | 12 | Ripley | 1:19.63 |
| 7 | 12 | Owen Hathway | 12 | Nova Cent'n | 1:20.35 |
| 8 | 10 | Cole Herman | 11 | Radford | 1:21.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 19 | Thomas Bruce | 12 | Boston | 1:18.26 |
| 2 | 21 | Matthew Cox | 11 | Nova Cent'n | 1:17.70 |
| 3 | 23 | Kieran Howard | 12 | Nova Cent'n | 1:17.10 |
| 4 | 25 | Cillan McGuinness | 13 | Bassetlaw SS | 1:16.86 |
| 5 | 24 | Adam Frazer | 12 | Rushden | 1:16.90 |
| 6 | 22 | Declan Luff | 12 | Leic Sharks | 1:17.40 |
| 7 | 20 | Sebastian Lee | 12 | Co Derby | 1:17.96 |
| 8 | 18 | Malachy Watt | 12 | Derventio | 1:18.78 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 29 | Lewis Warner | 13 | Calv Bing | 1:15.52 |
| 2 | 35 | Harry Benzies | 13 | Bassetlaw SS | 1:14.58 |
| 3 | 41 | Connor Byron | 13 | Nova Cent'n | 1:12.00 |
| 4 | 47 | Liam Dawson | 13 | Nova Cent'n | 1:06.20 |
| 5 | 44 | Connor Thorpe | 13 | Derventio | 1:09.90 |
| 6 | 38 | Adam Read | 13 | Nova Cent'n | 1:13.29 |
| 7 | 32 | Noah Rai | 12 | Nova Cent'n | 1:15.00 |
| 8 | 26 | Ben Atkinson | 13 | Co Derby | 1:16.53 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 30 | Thomas Gartside | 11 | Northampton | 1:15.44 |
| 2 | 36 | Oliver Silver | 12 | Nova Cent'n | 1:13.70 |
| 3 | 42 | Sean McCann | 13 | Co Leicester | 1:11.65 |
| 4 | 48 | Jody Gillott | 13 | Worksop | 1:06.10 |
| 5 | 45 | Samuel Smith | 13 | Northampton | 1:09.70 |
| 6 | 39 | Thomas Dixon | 13 | Braunstone | 1:13.20 |
| 7 | 33 | Thomas Polley | 12 | Nova Cent'n | 1:14.90 |
| 8 | 27 | Toby Love | 12 | Nova Cent'n | 1:16.52 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 31 | Reuben Heywood | 13 | Louth | 1:15.41 |
| 2 | 37 | Tyler Coles | 12 | Daventry | 1:13.61 |
| 3 | 43 | Rico Bringeman | 13 | Boston | 1:11.27 |
| 4 | 49 | Finley Bunhejee | 13 | NottmLeander | 1:04.10 |
| 5 | 46 | Max Shaw | 13 | Northampton | 1:09.40 |
| 6 | 40 | Elliot Sibley | 13 | Nova Cent'n | 1:12.40 |
| 7 | 34 | James Wright | 13 | Ilkeston | 1:14.60 |
| 8 | 28 | Luke Stevens | 12 | Leic Sharks | 1:15.74 |