EVENT 201 Girl Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Alice Cumberlidge | 13 | Satellite | 6:00.50 |
| 3 | 3 | Hannah Lee | 14 | Wigan BEST | 5:52.41 |
| 4 | 5 | Ruby Sheehan | 15 | Wigan BEST | 5:45.62 |
| 5 | 4 | Megan Kenningley | 14 | Stockport Mo | 5:46.00 |
| 6 | 2 | Esmee Slinn | 13 | Ellesmere Co | 5:58.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Isobel Munnoch | 15 | Tynemouth | 5:43.90 |
| 2 | 9 | Scarlett Hutchinson-Th | 14 | Bolton Metro | 5:43.53 |
| 3 | 11 | Georgia Heath | 18 | Bolton Metro | 5:39.20 |
| 4 | 13 | Hannah Sharpe | 16 | Newcastle | 5:37.09 |
| 5 | 12 | Isabel Lloyd | 14 | Wigan BEST | 5:37.45 |
| 6 | 10 | Amelia Redfearn | 14 | Skipton | 5:40.40 |
| 7 | 8 | Beth Richardson | 14 | Tynemouth | 5:43.80 |
| 8 | 6 | Alice Holt | 13 | Wigan BEST | 5:45.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Lydia Keeley | 17 | Stockport Mo | 5:25.59 |
| 2 | 17 | Chloe Ridge | 15 | Wigan BEST | 5:19.70 |
| 3 | 19 | Martha Ricketts | 15 | Satellite | 5:17.00 |
| 4 | 21 | Amy Kenworthy | 16 | Winsford | 5:15.50 |
| 5 | 20 | Niamh Savory | 14 | Newcastle | 5:15.60 |
| 6 | 18 | Anna Farr | 15 | Ellesmere Co | 5:19.60 |
| 7 | 16 | Evelyn Hallissey | 13 | Newcastle | 5:23.40 |
| 8 | 14 | Charlotte Grimshaw | 17 | Workington | 5:25.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Hannah Buick | 19 | Chase | 5:13.10 |
| 2 | 25 | Mollie Fisher | 17 | Rotherham Mo | 5:09.50 |
| 3 | 27 | Eliza Pinkstone | 17 | Stockport Mo | 5:07.30 |
| 4 | 29 | Anna Farrow | 17 | Ellesmere Co | 5:03.70 |
| 5 | 28 | Olivia Molden | 18 | Stockport Mo | 5:05.48 |
| 6 | 26 | Eleanor Broughton | 16 | Ellesmere Co | 5:08.80 |
| 7 | 24 | Daisy Purchase | 16 | Rotherham Mo | 5:10.90 |
| 8 | 22 | Ellie Wilson | 15 | Cockermouth | 5:15.20 |