EVENT 155 Female 14 Yrs/Under 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Georgia Watkins | 12 | Prescot | 6:21.30 |
| 4 | 4 | Erin James | 12 | Warrington W | 6:19.10 |
| 5 | 3 | Naya Phillips | 12 | Garston | 6:20.20 |
| 6 | 1 | Phoebe Evans | 12 | Blackpool Aq | 6:23.70 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Chloe Gardner | 12 | Blackburn | 6:09.60 |
| 2 | 8 | Elise Belcher | 13 | Stockport Mo | 6:01.10 |
| 3 | 10 | Harriet McDermott | 11 | Co Salford | 6:00.40 |
| 4 | 12 | Lucie Hindle | 13 | Preston | 5:57.50 |
| 5 | 11 | Orlaith Treacy | 13 | Carnforth | 5:59.40 |
| 6 | 9 | Esmay Dart | 13 | Kendal | 6:00.50 |
| 7 | 7 | Bethan Rowlands | 13 | Co Chester | 6:05.30 |
| 8 | 5 | Lily-Mae Wightman | 12 | Warrington W | 6:13.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Thea Grady | 12 | Satellite | 5:56.50 |
| 2 | 16 | Norah Graham | 13 | Co Liverpool | 5:52.00 |
| 3 | 18 | Lily McGuiness | 14 | Wigan BEST | 5:49.66 |
| 4 | 20 | Nalika Mortimer | 13 | Co Liverpool | 5:49.23 |
| 5 | 19 | Esme Cunliffe | 14 | Wigan BEST | 5:49.59 |
| 6 | 17 | Rose Nickson | 12 | Co Liverpool | 5:50.61 |
| 7 | 15 | Seren Johnson | 13 | Wirral Metro | 5:55.80 |
| 8 | 13 | Niomi Gorvett | 13 | Bolton Metro | 5:56.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Bethany Makwembere | 14 | Preston | 5:49.00 |
| 2 | 25 | Martha Baxter | 14 | Co Liverpool | 5:46.53 |
| 3 | 27 | Cheuk Kiu Kianna Hui | 14 | Co Liverpool | 5:44.30 |
| 4 | 29 | Elsie Kay | 14 | Leyland Barr | 5:42.80 |
| 5 | 28 | Emilia Armstrong | 13 | Wigan BEST | 5:44.08 |
| 6 | 26 | Isla Yates | 13 | Satellite | 5:46.00 |
| 7 | 23 | Grace Johnson | 14 | Satellite | 5:48.00 |
| 8 | 21 | Chloe Stewart | 13 | Prescot | 5:49.20 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Alivia Cutter | 14 | Wigan BEST | 5:40.49 |
| 2 | 34 | Eva Smith | 14 | Co Liverpool | 5:37.79 |
| 3 | 37 | Evangeline Brown | 14 | Bolton Metro | 5:36.40 |
| 4 | 39 | Esmee Moore | 14 | Bolton Metro | 5:35.99 |
| 5 | 38 | Eris Coxon | 13 | Winsford | 5:36.00 |
| 6 | 35 | Darcy Allanson | 13 | Leyland Barr | 5:37.74 |
| 7 | 32 | Zerrin Bentham | 14 | Co Liverpool | 5:38.95 |
| 8 | 30 | Sophie Barr | 13 | Aquabears | 5:41.84 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 41 | Ella Derbyshire | 14 | Stockport Mo | 5:32.80 |
| 2 | 43 | Isla Perry | 13 | Warrington W | 5:26.69 |
| 3 | 45 | Maya Karwa | 14 | Warrington W | 5:23.20 |
| 4 | 47 | Chloe Jones | 14 | Warrington W | 5:10.05 |
| 5 | 46 | Harper Aspinall | 14 | Wirral Metro | 5:22.40 |
| 6 | 44 | Matilda Bristow | 13 | Co Liverpool | 5:24.77 |
| 7 | 42 | Anujin Unur | 13 | Warrington W | 5:29.40 |
| 8 | 40 | Holly Relph | 14 | Cockermouth | 5:32.80 |