EVENT 25 Female 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Olivia CHARITY | 14 | Grantham | 4:20.00 |
| 3 | 2 | Sophie HARRISON | 15 | Deepings | 3:50.45 |
| 4 | 3 | Amaya MONTEALEGRE | 12 | Lincoln Vulc | 3:47.46 |
| 5 | 4 | Phoebe CHARMAN | 16 | Lincoln TSA | 3:40.12 |
| 6 | 5 | Emmeline GLEAVE | 10 | Grantham | 3:36.43 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Annabel SHEPHERD | 13 | Deepings | 3:14.07 |
| 2 | 10 | Grace HOWITT | 17 | Grantham | 3:04.79 |
| 3 | 12 | Lottie Ava FLATTERS | 13 | Deepings | 2:48.00 |
| 4 | 14 | Arabella PEARCE | 13 | Louth | 2:45.00 |
| 5 | 13 | Ellena HOWITT | 14 | Grantham | 2:47.93 |
| 6 | 11 | Iris FRENCH | 15 | Lincoln Vulc | 3:02.00 |
| 7 | 9 | Ruby TALKES | 10 | Lincoln Vulc | 3:13.00 |
| 8 | 7 | Octavia SHEARN | 13 | Grantham | 3:19.62 |