EVENT 404 Women's MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 1 | 1 | Fern Sneddon | 06 | S6 | RTW Monson | 6:06.50 |
| 2 | 2 | Charlotte Hyde | 02 | S7 | Enfield Sq | 5:40.88 |
| 3 | 3 | Eliza Humphrey | 05 | S11 | Northampton | 5:37.03 |
| 4 | 4 | Scarlett Humphrey | 05 | S11 | Northampton | 5:34.13 |
| 5 | 5 | Alice Tai | 99 | S8 | Ealing | 5:33.02 |
| 6 | 6 | Brooklyn Hale | 10 | S9 | Cockermouth | 5:27.69 |
| 7 | 7 | Evie Lambert | 07 | S9 | Bo Kirklees | 5:26.31 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 0 | 8 | Isabella Haynes | 08 | S9 | S Bournem'th | 5:19.36 |
| 1 | 9 | Maisie Summers-Newton | 02 | S6 | Northampton | 5:19.00 |
| 2 | 10 | Lily Rice | 04 | S8 | Pembs Cty | 5:15.39 |
| 3 | 11 | Meghan Willis | 07 | S9 | Torfaen D | 5:11.98 |
| 4 | 12 | Astrid Carroll | 09 | S12 | Co Sheffield | 5:11.82 |
| 5 | 13 | Amber Haycock | 07 | S10 | Northampton | 5:01.16 |
| 6 | 14 | Brock Whiston | 96 | S8 | Bark & Dagen | 4:57.87 |
| 7 | 15 | Toni Shaw | 03 | S9 | UoAPS | 4:48.48 |
| 8 | 16 | Faye Rogers | 02 | S10 | UoAPS | 4:41.06 |
| 9 | 17 | Jessica-Jane Applegate | 96 | S14 | Co Norwich | 4:40.01 |