EVENT 102 Girl 11 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Cobra THORLBY | 12 | Boston | 1:53.59 |
| 2 | 3 | Lexie SHEWAN | 11 | Grantham | 1:52.65 |
| 3 | 4 | Marcelina DEBICKA | 13 | Grantham | 1:46.56 |
| 4 | 5 | Orlaith STANLEY | 13 | Grantham | 1:44.63 |
| 5 | 7 | Shelby THORLBY | 15 | Boston | 1:40.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Charlotte GILL | 13 | Grantham | 1:34.75 |
| 2 | 9 | Grace HOWITT | 12 | Grantham | 1:33.44 |
| 3 | 10 | Jessica-Rose DAVISON | 12 | Grantham | 1:33.21 |
| 4 | 11 | Emilija IVANOVA | 12 | Boston | 1:33.09 |
| 5 | 12 | Sophie WARD | 12 | Grantham | 1:32.87 |
| 6 | 13 | Isobel MANNING | 13 | Boston | 1:29.67 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Libby BUNN | 13 | Boston | 1:27.94 |
| 2 | 15 | Zoe WILSON | 14 | Wisbech | 1:26.40 |
| 3 | 16 | Eloise WALKER | 14 | Grantham | 1:21.20 |
| 4 | 17 | Arwen MOORE | 14 | Ilkeston | 1:20.78 |
| 5 | 18 | McKinley COTTON | 13 | Ilkeston | 1:19.41 |
| 6 | 19 | Delainey COTTON | 16 | Ilkeston | 1:19.27 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Francesca HALLAM-STOTT | 14 | Grantham | 1:12.70 |
| 2 | 23 | Evie TURNER | 15 | Grantham | 1:09.73 |
| 3 | 25 | Grace TURNER | 14 | Grantham | 1:07.55 |
| 4 | 24 | Chloe HOPKINSON | 16 | Grantham | 1:08.04 |
| 5 | 22 | Samantha MACIJAUSKAITE | 16 | Boston | 1:10.25 |
| 6 | 20 | Alexandra HALLAM-STOTT | 15 | Grantham | 1:16.68 |