EVENT 301 Female 11 Yrs/Ov 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Niamh Corrigan | 11 | Southport | 6:33.52 |
| 2 | 3 | Esther Martin | 12 | Leyland Barr | 6:15.85 |
| 3 | 6 | Erin Fletcher | 12 | Leyland Barr | 6:05.87 |
| 4 | 8 | Cerys Newell | 16 | Stretford | 6:02.81 |
| 5 | 7 | Isabella Grimbaldeston | 13 | Leyland Barr | 6:05.31 |
| 6 | 5 | Grace Mackenzie | 12 | Blackpool Aq | 6:09.78 |
| 7 | 2 | Emily Yang | 12 | Co Manch Aq | 6:20.87 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Alexis Aspin | 13 | Preston | 6:00.00 |
| 2 | 13 | Weronika Rozwarska | 13 | Co Manch Aq | 5:55.41 |
| 3 | 17 | Phoebe Oliver | 16 | Skipton | 5:35.40 |
| 4 | 19 | Olivia Ballard | 15 | Leyland Barr | 5:29.40 |
| 5 | 18 | Samantha Harrington | 18 | Crosby | 5:31.54 |
| 6 | 16 | Daisy Dickinson | 15 | Carnforth | 5:42.47 |
| 7 | 11 | Lilah Cairns | 13 | Preston | 6:00.00 |
| 8 | 9 | Elise Burman | 13 | Blackpool Aq | 6:01.90 |