EVENT 5 Female 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Ria BHAGWAT | 12 | Orpington OJ | 2:06.10 |
| 2 | 2 | Malila STEWARD | 11 | Gwich Royals | 2:05.50 |
| 3 | 3 | Emma SCHELFTHOUT | 12 | Gwich Royals | 1:58.83 |
| 4 | 4 | Ava DIMOU | 12 | Gwich Royals | 1:58.13 |
| 5 | 5 | Ornella GERASCH | 11 | Saxon Crown | 1:48.89 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Freya FERRIS | 10 | Saxon Crown | 1:47.97 |
| 2 | 7 | Cadence WATTS | 11 | Black Lion | 1:47.94 |
| 3 | 8 | Amelia BEDE | 10 | Saxon Crown | 1:46.22 |
| 4 | 9 | Jessica MILLOTT | 10 | Saxon Crown | 1:45.24 |
| 5 | 10 | Jiahui Alice SHAN | 11 | Orpington OJ | 1:44.75 |
| 6 | 11 | Edie BUTLER | 10 | Maidstone SC | 1:41.28 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Roslyn BOWEN | 11 | Orpington OJ | 1:41.17 |
| 2 | 13 | Elsa MINELL-SOLAK | 11 | Bromley | 1:40.68 |
| 3 | 14 | Esme SWAIN | 14 | Herne Bay | 1:39.88 |
| 4 | 15 | Olivia BANKS | 13 | Black Lion | 1:39.40 |
| 5 | 16 | Elizaveta POLIATYKINA | 10 | Orpington OJ | 1:38.06 |
| 6 | 19 | Sienna GURUNG | 12 | Bexley | 1:35.15 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Saoirse WATMOUGH-PRICE | 13 | Gwich Royals | 1:33.49 |
| 2 | 21 | Evie LEWIS | 12 | Saxon Crown | 1:33.01 |
| 3 | 22 | Amelia BORYS | 12 | Gravesend | 1:32.69 |
| 4 | 23 | Angelika SERETIS | 12 | Gwich Royals | 1:32.56 |
| 5 | 24 | Hana MCAVOY | 12 | Orpington OJ | 1:29.68 |
| 6 | 25 | Maria-Lidia LVOVA | 12 | Gwich Royals | 1:29.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Thai CAFFOOR | 13 | Saxon Crown | 1:26.02 |
| 2 | 29 | Nancy JEFFRIES | 12 | Bexley | 1:25.50 |
| 3 | 32 | Amelia WHEELER | 14 | Orpington OJ | 1:18.71 |
| 4 | 31 | Isabella EVERETT | 13 | Bromley | 1:23.42 |
| 5 | 28 | Emily COOTE | 14 | Orpington OJ | 1:25.62 |
| 6 | 26 | Bessie MACK | 13 | Gwich Royals | 1:28.46 |