EVENT 201 Women Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Eliza Humphrey | 17 | S11 | Northampton | 5:54.70 |
| 4 | 3 | Maisie Summers-Newton | 20 | S6 | Northampton | 5:20.10 |
| 5 | 2 | Scarlett Humphrey | 17 | S11 | Northampton | 5:47.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 4 | Amber Haycock | 15 | S10 | Rushden | 5:11.94 |
| 2 | 6 | Grace Turner | 15 | | Grantham | 4:39.66 |
| 3 | 8 | Lucie Bannatyne | 15 | | Co Leicester | 4:38.05 |
| 4 | 10 | Lily Freeman | 15 | | Northampton | 4:33.50 |
| 5 | 9 | Adea Sollaku | 13 | | Derventio | 4:35.20 |
| 6 | 7 | Lydia Cordle | 12 | | Repton | 4:39.42 |
| 7 | 5 | Alyssa Lo | 14 | | Co Leicester | 4:39.96 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 12 | Hannah Hodgkiss | 16 | | Repton | 4:32.00 |
| 2 | 14 | Evie Woolley | 16 | | Northampton | 4:29.79 |
| 3 | 16 | Abby Mitchell | 16 | | Co Leicester | 4:28.80 |
| 4 | 18 | Alicia Massie | 17 | | Repton | 4:27.50 |
| 5 | 17 | Lucy Hitchin | 17 | | Repton | 4:28.38 |
| 6 | 15 | Bryony Lowe | 17 | | Co Leicester | 4:29.68 |
| 7 | 13 | Charlotte Hall | 20 | | Derventio | 4:31.50 |
| 8 | 11 | Olivia Hunter | 18 | | Co Leicester | 4:32.76 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 20 | Katie Hammond | 19 | | Uni of Nott | 4:25.24 |
| 2 | 22 | Megan Speirs | 18 | | Lincoln Vulc | 4:23.70 |
| 3 | 24 | Harriet Oxley | 17 | | Repton | 4:23.03 |
| 4 | 26 | Henrietta D'Ammassa | 17 | | Repton | 4:18.00 |
| 5 | 25 | Anna Farrow | 17 | | Co Leicester | 4:22.94 |
| 6 | 23 | Jessica Brandom | 15 | | Nova Cent'n | 4:23.50 |
| 7 | 21 | Charlotte Roome | 15 | | Derventio | 4:24.92 |
| 8 | 19 | Holly Lamb | 17 | | Co Leicester | 4:26.40 |