EVENT 508 Female 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Maisie Moore | 15 | Repton | 32.30 |
| 4 | 4 | Lucy Willatts | 14 | Grantham | 32.17 |
| 5 | 3 | Maisie Matthews | 14 | Louth | 32.23 |
| 6 | 1 | Evie Coburn | 16 | Melton M'bry | 32.31 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Daisy Tatlow-Turner | 15 | Chesterfield | 32.08 |
| 2 | 8 | Julia Radac | 15 | Rushden | 32.01 |
| 3 | 10 | Maisie-Leigh Simpson-D | 15 | Repton | 31.94 |
| 4 | 12 | Ava Olewicz | 14 | Dronfield | 31.92 |
| 5 | 11 | Imogen Howitt | 13 | Bassetlaw SS | 31.92 |
| 6 | 9 | Holly Hayle | 16 | Northampton | 32.00 |
| 7 | 7 | Daisie Taylor | 15 | Bassetlaw SS | 32.04 |
| 8 | 5 | Millicent Goldfinch | 15 | Loughborough | 32.11 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Amelia Denham | 16 | Chesterfield | 31.90 |
| 2 | 16 | Olivia Male | 14 | Derby Excel | 31.72 |
| 3 | 18 | Emily Hewitt | 15 | Hinckley | 31.65 |
| 4 | 20 | Martha Manson | 13 | Repton | 31.40 |
| 5 | 19 | Lara Treharne | 18 | Uni of Nott | 31.42 |
| 6 | 17 | Evie Bevan | 16 | Hinckley | 31.70 |
| 7 | 15 | Sophie Alonso | 16 | Calv Bing | 31.85 |
| 8 | 13 | Faye Eyton-Jones | 16 | Corby | 31.90 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Elsie Hatton | 13 | Repton | 31.20 |
| 2 | 30 | Annabelle Jay | 14 | Grantham | 30.28 |
| 3 | 36 | Connie Davies | 19 | Uni of Nott | 29.50 |
| 4 | 42 | Anna Tyers | 17 | Derby Excel | 28.49 |
| 5 | 39 | Eloise Cole | 17 | Repton | 29.20 |
| 6 | 33 | Erin Gent | 17 | Repton | 29.91 |
| 7 | 27 | Maya Almohammed | 15 | Repton | 30.80 |
| 8 | 21 | Mollie McGinley | 13 | Repton | 31.30 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Isabelle Cameron | 14 | Repton | 31.00 |
| 2 | 31 | Millie Wells | 18 | Lboro Uni | 30.14 |
| 3 | 37 | Charlotte Hall | 23 | Derby Excel | 29.46 |
| 4 | 43 | Isabelle Leigh | 21 | Uni of Nott | 28.02 |
| 5 | 40 | Hollie Whaymand | 17 | Repton | 28.81 |
| 6 | 34 | Lilli-Rose Carr | 16 | Co Lincoln P | 29.78 |
| 7 | 28 | Abbey Turnbull | 16 | CarltonForum | 30.41 |
| 8 | 22 | Charlotte Byron | 17 | Melton M'bry | 31.28 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Grace Wingham | 18 | Corby | 30.90 |
| 2 | 32 | Sarah Dew | 18 | Leic Sharks | 30.04 |
| 3 | 38 | Mabli Collyer | 17 | Repton | 29.40 |
| 4 | 44 | Georgie Pryor | 27 | Derby Excel | 27.46 |
| 5 | 41 | Fenella Wooddisse | 17 | Repton | 28.54 |
| 6 | 35 | Macey Brough | 14 | Repton | 29.50 |
| 7 | 29 | Isabel Wright | 19 | Long Eaton | 30.31 |
| 8 | 23 | Annabelle Blackbird | 15 | Repton | 31.26 |