EVENT 108 Womens MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 40 | Sallie PHILLIPS | 17 | S8 | Gloucester | 6:57.07 |
| 2 | 1 | Abbie OWENS | 18 | | Street | 4:41.62 |
| 3 | 2 | Jessica KELLEWAY | 13 | | Millfield | 4:41.40 |
| 4 | 3 | Amy GORDON | 15 | | Aquae Sulis | 4:40.40 |
| 5 | 4 | Honey OSRIN | 13 | | Plymouth Lea | 4:39.70 |
| 6 | 5 | Delphi EVANS | 14 | | Severnside | 4:39.46 |
| 7 | 6 | Eloise SUTTON | 15 | | Aquae Sulis | 4:39.30 |
| 8 | 7 | Waris MILLS | 14 | | Millfield | 4:39.24 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 8 | Jasmine MORONEY | 17 | | Weston S M | 4:38.92 |
| 2 | 9 | Polly PAINTER | 14 | | Millfield | 4:38.78 |
| 3 | 10 | Ellena THEOBALD | 15 | | Soundwell | 4:38.37 |
| 4 | 11 | Bethan BLAKELOCK | 17 | | Gloucester | 4:38.25 |
| 5 | 12 | Heather WITCOMBE | 14 | | Soundwell | 4:38.01 |
| 6 | 13 | Cody BROAD | 16 | | TauntonDeane | 4:37.71 |
| 7 | 14 | Alice BARTON | 13 | | Aquae Sulis | 4:37.30 |
| 8 | 15 | Teagan-Mae GRAHAM | 15 | | Poole | 4:37.05 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 16 | Hannah CROKER | 15 | | Aquae Sulis | 4:36.47 |
| 2 | 17 | India COOPER | 17 | | Street | 4:35.13 |
| 3 | 18 | Rosie HOLLAND | 15 | | Mt Kelly | 4:34.90 |
| 4 | 19 | Lauren HESSION | 15 | | Mt Kelly | 4:34.23 |
| 5 | 20 | Misty MARSHALL-WELLING | 15 | | Aquae Sulis | 4:33.43 |
| 6 | 21 | Abbie GILES | 16 | | Gloucester | 4:32.59 |
| 7 | 22 | Amie BUTTLE | 19 | | West Dorset | 4:31.57 |
| 8 | 23 | Megan VINGOE | 14 | | Carn Brea | 4:31.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 24 | Natasha GARRY | 19 | | Bath Univ | 4:31.20 |
| 2 | 25 | Sara MAZZEO | 16 | | Carn Brea | 4:30.90 |
| 3 | 26 | Lucy ARMITAGE | 14 | | Plymouth Lea | 4:30.40 |
| 4 | 27 | Georgina DENNIS | 14 | | Mt Kelly | 4:29.80 |
| 5 | 28 | Lucy PEARCE | 19 | | S Bournem'th | 4:29.10 |
| 6 | 29 | Thea O'KEEFE | 16 | | Poole | 4:27.90 |
| 7 | 30 | Thalia POAROS | 15 | | Mt Kelly | 4:26.70 |
| 8 | 31 | Laura MCNAB | 15 | | Aquae Sulis | 4:25.90 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 33 | Robyn EDWARDS | 18 | | TauntonDeane | 4:24.60 |
| 2 | 35 | Emilia STEVENSON | 18 | | Bath Univ | 4:21.70 |
| 3 | 37 | Emily SIEBRECHT | 19 | | Bath Univ | 4:16.70 |
| 4 | 39 | Rachel ANDERSON | 14 | | Millfield | 4:13.70 |
| 5 | 38 | Mari DAVIES | 18 | | Bath Univ | 4:15.87 |
| 6 | 36 | Evan KING | 17 | | Weston S M | 4:21.42 |
| 7 | 34 | Olivia BUTLER | 13 | | Co Bristol | 4:23.70 |
| 8 | 32 | Chloe PLATER | 16 | | Mt Kelly | 4:25.60 |