EVENT 112 Women 12/14 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Wiktoria Marcinek | 13 | West Norfolk | 6:14.90 |
| 4 | 4 | Ella Greatbatch | 13 | Bishop Stort | 6:09.90 |
| 5 | 3 | Eloise Cole | 13 | Modernian | 6:14.09 |
| 6 | 1 | Adrija Raudonyte | 13 | Newmarket | 6:14.94 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Eleanor McLeod | 13 | Putteridge | 6:07.70 |
| 2 | 8 | Ella Dawson | 13 | Chelmsford | 6:07.00 |
| 3 | 10 | Bethany Crawley | 13 | teamipswich | 6:05.75 |
| 4 | 12 | Ella Edwards | 12 | Basildon Ph | 5:58.57 |
| 5 | 11 | Annie McLeod | 13 | Putteridge | 6:00.90 |
| 6 | 9 | Amelia Saunders | 13 | Leiston | 6:06.53 |
| 7 | 7 | Angelica Lazauskaite | 13 | Watford SC | 6:07.69 |
| 8 | 5 | Abigail Riches | 13 | Norwich Swan | 6:09.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Chloe Barnard | 12 | Basildon Ph | 5:52.77 |
| 2 | 16 | Olivia Mahoney | 13 | Co Peterboro | 5:47.54 |
| 3 | 18 | Charlotte Shaw | 14 | Co Peterboro | 5:39.58 |
| 4 | 20 | Rebecca Brown | 14 | Stowmarket | 5:36.49 |
| 5 | 19 | Hollie Hawkins | 14 | Basildon Ph | 5:38.84 |
| 6 | 17 | Lexie Goodman | 14 | Basildon Ph | 5:39.60 |
| 7 | 15 | Isla Hamilton | 13 | Norwich Swan | 5:48.37 |
| 8 | 13 | Maria Stanciu | 13 | Chelmsford | 5:58.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Gracie Parker | 13 | Basildon Ph | 5:35.12 |
| 2 | 24 | Lexie O'Connor | 14 | Basildon Ph | 5:33.90 |
| 3 | 26 | Daisy Manning | 13 | Basildon Ph | 5:26.60 |
| 4 | 28 | Cait Cotter | 14 | Chelmsford | 5:22.50 |
| 5 | 27 | Lisa Leinemann | 14 | Chelmsford | 5:25.78 |
| 6 | 25 | Charlotte Smith | 14 | Norwich Swan | 5:30.57 |
| 7 | 23 | Grace Greenhalf | 14 | Co Norwich | 5:34.40 |
| 8 | 21 | Amara Addison | 14 | Norwich Swan | 5:35.67 |