EVENT 15 Girl Open 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Eleanor TWINLEY | 11 | Deepings | 4:45.00 |
| 4 | 2 | Amy TAYLOR | 10 | Grantham | 4:00.00 |
| 5 | 4 | Marcelina DEBICKA | 14 | Grantham | 3:38.54 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Helena FIELD | 13 | Louth | 3:26.31 |
| 3 | 6 | K GREENWOOD-COVELL | 14 | Deepings | 3:17.34 |
| 4 | 7 | Florrie HENSMAN | 12 | Louth | 3:06.08 |
| 5 | 8 | Olivia SPENCER | 15 | Lincoln Vulc | 2:59.19 |
| 6 | 9 | Cora FARLEY | 13 | Grantham | 2:54.63 |
| 7 | 10 | Evelyn JACKSON | 13 | Lincoln Vulc | 2:43.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Olivia ANSTEY | 13 | Louth | 2:39.66 |
| 2 | 14 | Sadie HUNTER | 13 | Deepings | 2:36.24 |
| 3 | 16 | Francesca PALFREY | 15 | Loughborough | 2:34.04 |
| 4 | 18 | Abbie RUDDLE | 18 | Loughborough | 2:24.27 |
| 5 | 17 | Chloe HOPKINSON | 17 | Grantham | 2:32.82 |
| 6 | 15 | Evie TURNER | 16 | Grantham | 2:34.15 |
| 7 | 13 | Francesca HALLAM-STOTT | 15 | Grantham | 2:38.16 |
| 8 | 11 | Elizabeth PALFREY | 14 | Loughborough | 2:41.04 |