EVENT 305 Girls 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Mahveen Rai | 13 | Modernian | 2:03.62 |
| 4 | 2 | Philippa Bodey | 11 | Market Har | 1:55.62 |
| 5 | 3 | Florence Senior | 12 | Co Leicester | 1:50.25 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Laura Graham-Brown | 11 | Co Leicester | 1:50.00 |
| 2 | 5 | Isabel Marston | 13 | Co Leicester | 1:48.65 |
| 3 | 6 | Megan Barnicoat | 11 | Modernian | 1:47.04 |
| 4 | 7 | Isabelle Rose | 13 | Co Leicester | 1:41.70 |
| 5 | 8 | Tate Fox | 11 | Bassetlaw SS | 1:39.40 |
| 6 | 9 | Emilia Durrington | 12 | Co Leicester | 1:39.24 |
| 7 | 10 | Kimberley Hayes | 11 | Kettering | 1:38.18 |
| 8 | 11 | Sophie Ludlam | 15 | Leicester Ne | 1:37.46 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Stansie Crowe | 11 | Bassetlaw SS | 1:36.40 |
| 2 | 13 | Isla O'Connor | 12 | Bassetlaw SS | 1:35.90 |
| 3 | 14 | Erika Middleton | 11 | Rugby | 1:34.17 |
| 4 | 15 | Imogen Howitt | 10 | Bassetlaw SS | 1:33.61 |
| 5 | 16 | Fleur Nugent | 15 | Modernian | 1:32.84 |
| 6 | 17 | Niamh Dunbar | 14 | Co Leicester | 1:32.15 |
| 7 | 18 | Sophie Weston | 13 | Modernian | 1:30.84 |
| 8 | 19 | Evie Bevan | 13 | Co Leicester | 1:30.06 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Isobelle Rafferty | 11 | Bassetlaw SS | 1:29.80 |
| 2 | 21 | Imogen Sherman | 15 | Leicester Ne | 1:28.50 |
| 3 | 22 | Lucy Brighouse | 15 | Co Derby | 1:28.13 |
| 4 | 23 | Tabitha Frame | 14 | Modernian | 1:27.47 |
| 5 | 24 | Ellie Beyxer | 12 | Coalville | 1:26.20 |
| 6 | 25 | Charlie Duce | 13 | Modernian | 1:24.77 |
| 7 | 26 | Lucy Lee | 16 | Leic Peng | 1:24.00 |
| 8 | 27 | Amelia Kerr | 15 | Rugby | 1:23.60 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 28 | Maya Almohammed | 12 | NottmLeander | 1:23.30 |
| 2 | 29 | Dorothy Plumpton | 13 | Co Leicester | 1:22.64 |
| 3 | 30 | Molly Wall | 15 | Rugby | 1:22.14 |
| 4 | 31 | Hayley Knifton | 16 | Coalville | 1:21.49 |
| 5 | 32 | Isabel Brand | 13 | Rugby | 1:20.95 |
| 6 | 33 | Agata Scerbakova | 12 | Rugby | 1:20.00 |
| 7 | 34 | Darcy Morris | 14 | Rugby | 1:19.77 |
| 8 | 35 | Kate Andrews | 14 | Co Leicester | 1:19.01 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 36 | Magenta Kenyon | 17 | Kettering | 1:17.35 |
| 2 | 37 | Anna Macpherson | 17 | Modernian | 1:16.20 |
| 3 | 38 | Alicia Ball | 16 | Co Leicester | 1:15.90 |
| 4 | 39 | Katie Kirk | 18 | Leicester Ne | 1:14.96 |
| 5 | 40 | Freya Wingfield-Dobbs | 16 | Co Leicester | 1:14.95 |
| 6 | 41 | Emily Batchelor | 15 | Kettering | 1:14.88 |
| 7 | 42 | Jessica Oxley | 13 | Co Leicester | 1:11.40 |
| 8 | 43 | Alice Streeter | 16 | Co Leicester | 1:11.16 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 45 | Morgan Brand | 16 | Rugby | 1:10.74 |
| 2 | 47 | Amy Godwin | 21 | Coalville | 1:10.07 |
| 3 | 49 | Freya Peace | 15 | Bassetlaw SS | 1:06.70 |
| 4 | 51 | Carys O'Reilly | 19 | Co Leicester | 1:03.96 |
| 5 | 50 | Alyssa Lo | 14 | Co Leicester | 1:06.66 |
| 6 | 48 | Eloise Cole | 14 | Modernian | 1:07.20 |
| 7 | 46 | Annabel Russell | 16 | Co Leicester | 1:10.64 |
| 8 | 44 | Ava Buxton | 15 | NottmLeander | 1:10.75 |