EVENT 102 Boy 11/13 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 3 | Freddie Burdett | 12 | Co Leicester | 1:24.50 |
| 2 | 9 | Ciaran Long | 13 | Daventry | 1:17.98 |
| 3 | 15 | Jack Hurry | 13 | Northampton | 1:15.15 |
| 4 | 21 | Billy Harding | 13 | Repton Swim | 1:13.20 |
| 5 | 18 | Frank Lamb | 13 | South Lincs | 1:13.98 |
| 6 | 12 | Alex Bates | 12 | Chesterfield | 1:16.10 |
| 7 | 6 | James Thomas | 12 | Gainsborough | 1:22.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Daniel Hepplestone | 12 | Lincoln Vulc | 1:23.60 |
| 2 | 10 | Oliver Ashman | 12 | Co Leicester | 1:16.90 |
| 3 | 16 | Oscar Ferrar | 13 | NottmLeander | 1:15.00 |
| 4 | 22 | Jacob Fish | 13 | Grantham | 1:11.30 |
| 5 | 19 | Joel Harby | 13 | Nova Cent'n | 1:13.89 |
| 6 | 13 | Aryan Nath | 13 | Corby | 1:15.70 |
| 7 | 7 | William Trapp | 12 | Leic Sharks | 1:21.20 |
| 8 | 1 | Aaron Sadler | 12 | South Lincs | 1:25.20 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Samuel Green | 12 | Bassetlaw SS | 1:23.17 |
| 2 | 11 | Finley Emery | 13 | Rushden | 1:16.78 |
| 3 | 17 | Harvey-Jay Allsopp | 13 | Nova Cent'n | 1:14.39 |
| 4 | 23 | Thomas Swales | 13 | Nova Cent'n | 1:03.89 |
| 5 | 20 | Jack Welbourne | 13 | Nova Cent'n | 1:13.34 |
| 6 | 14 | James Nichols | 13 | Grantham | 1:15.50 |
| 7 | 8 | Rishan Chuhan | 13 | Nova Cent'n | 1:20.50 |
| 8 | 2 | Charlie Bisby | 11 | South Lincs | 1:24.86 |