EVENT 310 Womens MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 1 | Lauren Sullivan | 16 | S6 | Cheam Marc S | 8:29.62 |
| 4 | 3 | Grace Harvey | 15 | S7 | Hoddesdon | 6:58.76 |
| 5 | 2 | Alice Rush | 16 | S8 | Co Cambridge | 7:32.35 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 5 | Rebecca Franks | 16 | S9 | Co Lincoln P | 6:36.07 |
| 2 | 7 | Natalie Jones | 29 | S6 | Colchester P | 5:59.05 |
| 3 | 9 | Coral Farrell | 12 | S10 | Warrington W | 5:54.46 |
| 4 | 11 | Emma Hollis | 21 | S8 | Loughboro Un | 5:24.85 |
| 5 | 10 | Chloe Buck | 16 | S9 | Team Jorvik | 5:34.04 |
| 6 | 8 | Harriet Dickinson | 16 | S10 | Clevedon | 5:57.53 |
| 7 | 6 | Nyree Kindred | 33 | S6 | Co Hereford | 6:11.95 |
| 8 | 4 | Katie Rilett-Young | 15 | S6 | Burnley BOBC | 6:42.06 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 13 | Susannah Rodgers | 30 | S7 | Otter | 5:18.93 |
| 1 | 15 | Alice Tai | 14 | S10 | Seagulls Swi | 5:10.78 |
| 2 | 17 | Lauren Steadman | 21 | S9 | Portsmouth N | 4:55.17 |
| 3 | 19 | Amy Marren | 15 | S9 | Romford Town | 4:50.79 |
| 4 | 21 | Hannah Russell | 17 | S12 | Kelly Coll | 4:38.60 |
| 5 | 20 | Tully Kearney | 16 | S10 | Royal Wolv | 4:49.71 |
| 6 | 18 | Rosie Bancroft | 18 | S10 | Co Oxford | 4:53.58 |
| 7 | 16 | Gemma Almond | 20 | S10 | Swansea Uni | 4:56.37 |
| 8 | 14 | Emily Harris | 16 | S9 | St Felix Sch | 5:17.02 |
| 9 | 12 | Eleanor Simmonds | 19 | S6 | Swansea Uni | 5:19.17 |