EVENT 402 Girl Open 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Lily JACKSON | 12 | Lincoln TSA | 4:20.00 |
| 4 | 2 | Charlotte BROWNLESS | 11 | Lincoln TSA | 4:10.00 |
| 5 | 3 | Emily PENNELL | 13 | Co Lincoln P | 4:00.00 |
| 6 | 4 | Annabel SHEPHERD | 11 | Deepings | 3:51.37 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Eleanor TWINLEY | 12 | Deepings | 3:39.49 |
| 2 | 6 | Millie POOLE | 12 | Co Lincoln P | 3:37.04 |
| 3 | 7 | Lottie Ava FLATTERS | 10 | Deepings | 3:30.24 |
| 4 | 8 | Sophie FOSTER | 12 | Louth | 3:30.00 |
| 5 | 9 | Isla SCOTT | 12 | Lincoln Vulc | 3:25.00 |
| 6 | 10 | Lucy DAVIS | 14 | Lincoln Vulc | 3:16.17 |
| 7 | 11 | Charlotte JENKINSON | 13 | Deepings | 3:11.13 |
| 8 | 12 | Harriet MCCORMACK | 13 | Grantham | 3:05.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Sophie MARSHALL | 17 | Co Lincoln P | 2:53.39 |
| 2 | 16 | Emily BRIGGS | 13 | South Lincs | 2:47.50 |
| 3 | 18 | Gracie-May COLE | 15 | Co Lincoln P | 2:34.37 |
| 4 | 20 | Katie MALONEY | 26 | Louth | 2:21.34 |
| 5 | 19 | Evelyn JACKSON | 15 | Lincoln Vulc | 2:34.14 |
| 6 | 17 | Corey FARLEY | 14 | Deepings | 2:43.24 |
| 7 | 15 | Olivia SPENCER | 17 | Lincoln Vulc | 2:49.30 |
| 8 | 13 | Eloise WALKER | 16 | Deepings | 3:03.53 |