EVENT 114 Mixed 09 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Rosie JONES | 13 | Deepings | 7:40.00 |
| 2 | 4 | Lottie Ava FLATTERS | 11 | Deepings | 6:51.30 |
| 3 | 6 | Harriet MCCORMACK | 14 | Grantham | 5:54.23 |
| 4 | 8 | Lucy WILLATTS | 12 | Grantham | 5:49.10 |
| 5 | 7 | Amy TAYLOR | 12 | Grantham | 5:49.63 |
| 6 | 5 | Grace HOWITT | 15 | Grantham | 5:59.42 |
| 7 | 3 | Emilijus BINKIS | 12 | South Lincs | 7:39.20 |
| 8 | 1 | Annabel SHEPHERD | 11 | Deepings | 7:43.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Sophie WARD | 14 | Grantham | 5:45.56 |
| 2 | 12 | Isla GRAY | 14 | Grantham | 5:38.51 |
| 3 | 14 | James CASH | 13 | Deepings | 5:33.49 |
| 4 | 16 | Jack HICKS | 14 | Lincoln Vulc | 5:13.43 |
| 5 | 15 | Gracie-May COLE | 15 | Lincoln Vulc | 5:27.75 |
| 6 | 13 | Jessica HERRIOTT | 15 | South Lincs | 5:38.17 |
| 7 | 11 | Liv SPENCER | 17 | Lincoln Vulc | 5:40.93 |
| 8 | 9 | Oliver SHEPHERD | 14 | Deepings | 5:48.40 |