EVENT 114 Mixed 09 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Mia WILLIAMS | 11 | Lincoln Vulc | |
| 3 | 2 | Scarlett ROBERTS | 11 | Lincoln Vulc | 7:46.72 |
| 4 | 3 | Katie BEASTALL | 12 | Co Lincoln P | 6:59.86 |
| 5 | 4 | Jessica ROBERTS | 14 | Lincoln Vulc | 6:59.66 |
| 6 | 5 | Ella KHAMA | 11 | Grantham | 6:53.61 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Niamh KERRIGAN | 12 | Co Lincoln P | 6:50.00 |
| 2 | 7 | Evie DAVIES | 13 | Deepings | 6:40.93 |
| 3 | 8 | Isabelle CLAYTON | 13 | Grantham | 6:36.84 |
| 4 | 9 | Derrin BROCKLEBANK | 12 | Grantham | 6:34.71 |
| 5 | 10 | Hollie-Ann CROOK | 11 | Grantham | 6:19.17 |
| 6 | 11 | Henry DOLAN | 12 | Grantham | 6:12.50 |
| 7 | 12 | Isobel DELDERFIELD | 12 | Co Lincoln P | 6:09.72 |
| 8 | 13 | Lexie SHEWAN | 15 | Grantham | 6:08.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Yu Ching CHEUNG | 14 | Grantham | 5:55.58 |
| 2 | 17 | Alex HALLAM-STOTT | 19 | Warwick Uni | 5:41.17 |
| 3 | 19 | George LEONARD | 13 | Grantham | 5:33.70 |
| 4 | 21 | Grace MACDONALD | 16 | Grantham | 5:04.32 |
| 5 | 20 | Jack HICKS | 16 | Lincoln Vulc | 5:07.71 |
| 6 | 18 | Lizzy LERESCHE HANDS | 14 | Grantham | 5:40.12 |
| 7 | 16 | Ella BLACKBOURN | 17 | Lincoln Vulc | 5:48.07 |
| 8 | 14 | Lottie Ava FLATTERS | 13 | Deepings | 5:59.06 |