EVENT 108 Womens Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 1 | Levana Hanson | 15 | S8 | Gloucester | 6:06.40 |
| 4 | 2 | Harriet Dickinson | 18 | S10 | Clevedon | 5:31.70 |
| 5 | 3 | Alice Tai | 16 | S10 | Bourmth Coll | 4:41.22 |
| 6 | 4 | Ella Wardale | 16 | | Swindon Dolp | 4:40.92 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 5 | Megan Leaper | 15 | | S Bournem'th | 4:40.50 |
| 1 | 6 | Jorji Longdon | 16 | | Soundwell | 4:40.29 |
| 2 | 7 | Megan Richards | 15 | | Weston S M | 4:39.99 |
| 3 | 8 | Sophie Minnican | 19 | | Plymouth Lea | 4:39.46 |
| 4 | 9 | Holly Richards | 15 | | Weston S M | 4:39.46 |
| 5 | 10 | Thea O'Keefe | 15 | | Poole | 4:39.20 |
| 6 | 11 | Georgia Martin | 15 | | Mt Kelly | 4:38.77 |
| 7 | 12 | Sarah Matthews | 16 | | Millfield | 4:38.34 |
| 8 | 13 | Abbie Giles | 15 | | Gloucester | 4:37.63 |
| 9 | 14 | Bethan Blakelock | 16 | | Gloucester | 4:37.29 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 15 | Emily Cutler | 17 | | Mt Kelly | 4:37.19 |
| 1 | 16 | Zoe Gannaway | 15 | | Bourmth Coll | 4:37.00 |
| 2 | 17 | Rosemary Whittaker | 15 | | Plymouth Lea | 4:36.81 |
| 3 | 18 | Siobhan Durcan | 17 | | Co Bristol | 4:36.50 |
| 4 | 19 | Nsibambi Lunkuse | 18 | | Plymouth Lea | 4:35.44 |
| 5 | 20 | Zuzanna Janecka | 16 | | Plymouth Lea | 4:35.44 |
| 6 | 21 | Molina Smalley | 17 | | Plymouth Lea | 4:35.22 |
| 7 | 22 | Bethan O'Hara | 17 | | Seagulls Swi | 4:34.84 |
| 8 | 23 | Kelly Jeffery | 17 | | Barnstaple | 4:34.78 |
| 9 | 24 | Lucie Street | 16 | | Millfield | 4:34.71 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 25 | Maria Jones | 16 | | Southwold | 4:34.12 |
| 1 | 26 | Alexandra Szuplewski | 17 | | Caradon | 4:33.26 |
| 2 | 27 | Georgina Hardwick | 18 | | Severnside | 4:32.42 |
| 3 | 28 | Jessica Richens | 16 | | S Bournem'th | 4:32.16 |
| 4 | 29 | Yasmin Boff | 15 | | Plymouth Lea | 4:31.90 |
| 5 | 30 | Imogen Moroney | 15 | | Weston S M | 4:31.87 |
| 6 | 31 | Jemma Green | 15 | | S Bournem'th | 4:31.87 |
| 7 | 32 | Robyn Edwards | 17 | | TauntonDeane | 4:31.40 |
| 8 | 33 | Leah Picillo | 18 | | Mt Kelly | 4:29.11 |
| 9 | 34 | Chloe Edrich | 16 | | TauntonDeane | 4:28.59 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 36 | Charlotte Pitts | 19 | | Yeovil | 4:25.38 |
| 1 | 38 | Lucy Pearce | 18 | | Co Bristol | 4:24.57 |
| 2 | 40 | Sophie Hall | 17 | | Gloucester | 4:21.86 |
| 3 | 42 | Emily Corry | 18 | | Plymouth Lea | 4:17.62 |
| 4 | 44 | Jurate Scerbinskaite | 21 | | Plymouth Lea | 4:16.60 |
| 5 | 43 | Megan Bowen | 18 | | Mt Kelly | 4:16.60 |
| 6 | 41 | Yael Danieli | 18 | | Plymouth Lea | 4:19.40 |
| 7 | 39 | Evan King | 16 | | Weston S M | 4:24.25 |
| 8 | 37 | Emily Clarke | 18 | | Poole | 4:25.23 |
| 9 | 35 | Amie Buttle | 18 | | West Dorset | 4:27.26 |