EVENT 201 Girls 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Annabelle JAY | 12 | Grantham | |
| 4 | 3 | Elisabeth KINNEAR | 13 | Grantham | |
| 5 | 5 | Lucy ABBOTT | 11 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 6 | E LERESCHE HANDS | 12 | Grantham | |
| 3 | 7 | Annie WEBSTER | 11 | Grantham | |
| 4 | 8 | Isobel ALLSOP | 13 | Grantham | |
| 5 | 9 | Lucy WILLATTS | 12 | Grantham | 7:17.76 |
| 6 | 10 | Lexie SHEWAN | 13 | Grantham | 6:58.02 |
| 7 | 11 | Marcelina DEBICKA | 15 | Grantham | 6:54.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Amy TAYLOR | 12 | Grantham | 6:40.80 |
| 2 | 16 | Jessica - Rose DAVISON | 14 | Grantham | 6:28.52 |
| 3 | 18 | Sophie WARD | 14 | Grantham | 6:14.15 |
| 4 | 20 | Megan BROWN | 14 | Grantham | 5:41.04 |
| 5 | 19 | Emilie WEBB | 13 | Grantham | 6:10.50 |
| 6 | 17 | Harriet MCCORMACK | 14 | Grantham | 6:15.90 |
| 7 | 15 | Grace HOWITT | 14 | Grantham | 6:31.11 |
| 8 | 12 | Ellena HOWITT | 12 | Grantham | 6:53.70 |