EVENT 205 Women 15 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 1 | Eliza Humphrey | 18 | S11 | Northampton | 5:45.44 |
| 3 | 3 | Grace Grindrod | 15 | | Northampton | 4:58.50 |
| 4 | 5 | Abbie Tunnicliffe | 15 | | Derby Excel | 4:53.90 |
| 5 | 4 | Neve Ping | 15 | | Bassetlaw SS | 4:55.30 |
| 6 | 2 | Amber Haycock | 16 | S10 | Rushden | 5:03.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 7 | Matilda Hase | 16 | | Derby Excel | 4:53.70 |
| 1 | 9 | Lily Mitchell | 15 | | Nova Cent'n | 4:52.60 |
| 2 | 11 | Lillie Hamilton | 15 | | South Lincs | 4:50.50 |
| 3 | 13 | Francesca Palfrey | 17 | | Loughborough | 4:49.90 |
| 4 | 15 | Ruby Credland | 16 | | Bassetlaw SS | 4:49.20 |
| 5 | 14 | Charlotte Hodgin | 15 | | Co Lincoln P | 4:49.80 |
| 6 | 12 | Erin O'Neill | 16 | | Radford | 4:50.10 |
| 7 | 10 | Ella Mae Prior | 15 | | Corby | 4:50.80 |
| 8 | 8 | Elena Aldenhoff-Kelly | 15 | | Grantham | 4:53.30 |
| 9 | 6 | Emma Rann | 15 | | Nova Cent'n | 4:53.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 17 | Millie Wells | 16 | | Co Leicester | 4:46.13 |
| 1 | 19 | Kt Taylor | 17 | | Chesterfield | 4:42.40 |
| 2 | 21 | Francesca Hallam-Stott | 16 | | Grantham | 4:42.00 |
| 3 | 23 | Katie Hammond | 20 | | Uni of Nott | 4:40.40 |
| 4 | 25 | Lucie Bannatyne | 16 | | Co Leicester | 4:39.00 |
| 5 | 24 | Jennifer Walker | 15 | | Bassetlaw SS | 4:39.60 |
| 6 | 22 | Jessica O'Herlihy | 17 | | South Lincs | 4:40.70 |
| 7 | 20 | Erin Lee | 17 | | Nova Cent'n | 4:42.01 |
| 8 | 18 | Poppy Mead | 18 | | Derby Excel | 4:42.76 |
| 9 | 16 | Annabel Russell | 17 | | Co Leicester | 4:48.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 29 | Lucy Cadden | 19 | | Derby Excel | 4:35.59 |
| 1 | 35 | Eleanor Broughton | 17 | | Repton | 4:32.20 |
| 2 | 41 | Hannah Hodgkiss | 17 | | Repton | 4:27.64 |
| 3 | 47 | Anna Farrow | 18 | | Co Leicester | 4:26.10 |
| 4 | 53 | Rachel Anderson | 21 | | Lboro Uni | 4:16.26 |
| 5 | 50 | Alicia Dingle | 21 | | Lboro Uni | 4:24.70 |
| 6 | 44 | Harriet Oxley | 18 | | Repton | 4:26.40 |
| 7 | 38 | Shae Stewart | 17 | | Nova Cent'n | 4:31.10 |
| 8 | 32 | Marija Romanovskaja | 17 | | Repton | 4:34.62 |
| 9 | 26 | Emilia Cieszczyk | 16 | | Northampton | 4:38.69 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 30 | Lily Freeman | 16 | | Northampton | 4:34.80 |
| 1 | 36 | Olivia Hunter | 19 | | Co Leicester | 4:32.10 |
| 2 | 42 | Abby Mitchell | 17 | | Co Leicester | 4:27.60 |
| 3 | 48 | Chloe Goodridge | 18 | | Northampton | 4:25.71 |
| 4 | 54 | Fleur Lewis | 20 | | Lboro Uni | 4:15.85 |
| 5 | 51 | Scarlett Orchard | 20 | | Lboro Uni | 4:23.82 |
| 6 | 45 | Emma Croker | 18 | | South Lincs | 4:26.40 |
| 7 | 39 | Alicia Massie | 18 | | Repton | 4:30.30 |
| 8 | 33 | Bryony Lowe | 18 | | Co Leicester | 4:34.50 |
| 9 | 27 | Emily Parkins | 16 | | Nova Cent'n | 4:37.10 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 31 | Jessica Cater | 16 | | Nova Cent'n | 4:34.73 |
| 1 | 37 | Eja Coe | 17 | | Derby Excel | 4:31.21 |
| 2 | 43 | Jessica Brandom | 16 | | Nova Cent'n | 4:26.80 |
| 3 | 49 | Isabelle Jopson | 20 | | Lboro Uni | 4:25.67 |
| 4 | 55 | Mia Slevin | 20 | | Lboro Uni | 4:13.24 |
| 5 | 52 | Henrietta D’Ammassa | 18 | | Repton | 4:20.81 |
| 6 | 46 | Livia Kingsland | 18 | | Nova Cent'n | 4:26.20 |
| 7 | 40 | Alexandra Bulat | 17 | | Co Lincoln P | 4:29.00 |
| 8 | 34 | Holly Lamb | 18 | | Co Leicester | 4:32.90 |
| 9 | 28 | Alyssa Lo | 15 | | Co Leicester | 4:35.62 |