EVENT 302 Female 15 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Ellie Randall | 15 | Chesterfield | 1:21.72 |
| 3 | 4 | Amelia Young | 17 | Buxton | 1:17.11 |
| 4 | 6 | Eva Lemmon | 15 | DerbyPhoenix | 1:16.30 |
| 5 | 5 | Scarlett Sampson | 15 | Eckington | 1:16.90 |
| 6 | 3 | Brianna Hansen-Hoare | 16 | Repton | 1:20.37 |
| 7 | 1 | I Flanagan-Nicholls | 15 | Swadlincote | 1:22.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Eva Mathias | 15 | Repton | 1:13.50 |
| 2 | 10 | Olivia Marshall | 16 | BelperMarlin | 1:09.78 |
| 3 | 12 | Libby Walsh | 16 | Swadlincote | 1:08.51 |
| 4 | 14 | Alice Marriott | 17 | Repton | 1:07.00 |
| 5 | 13 | Ashleigh Green | 17 | Repton | 1:07.30 |
| 6 | 11 | Sophie Martin | 16 | Chesterfield | 1:09.73 |
| 7 | 9 | Paige Dyche | 15 | Swadlincote | 1:11.94 |
| 8 | 7 | Hebe Spooner | 15 | Dronfield | 1:16.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Elise Collins | 21 | Chesterfield | 1:05.23 |
| 2 | 18 | Mabli Collyer | 15 | Repton | 1:04.67 |
| 3 | 20 | Annabel Crees | 16 | Repton | 1:04.20 |
| 4 | 22 | Jessica Smelt | 16 | Repton | 1:01.90 |
| 5 | 21 | Anna Tyers | 15 | Derby Excel | 1:03.60 |
| 6 | 19 | Helen Sharratt | 17 | DerbyPhoenix | 1:04.40 |
| 7 | 17 | Eleanor Broughton | 17 | Repton | 1:05.18 |
| 8 | 15 | Holly Robinson | 18 | Repton | 1:05.60 |