EVENT 208 Girls 12 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Emily Stevens | 12 | Ilkeston | |
| 4 | 2 | Holly Hill | 13 | BelperMarlin | 2:30.00 |
| 5 | 45 | Emilie Kitchen | 12 | Matlock | 3:30.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 3 | Alice Torry | 13 | Eckington | 2:10.00 |
| 2 | 5 | Annie Langley | 12 | Ilkeston | 2:09.00 |
| 3 | 7 | Rowan Greig | 12 | Long Eaton | 1:57.10 |
| 4 | 9 | Isabel Axford | 15 | BelperMarlin | 1:42.93 |
| 5 | 8 | Alma Phillimore | 12 | Long Eaton | 1:50.15 |
| 6 | 6 | Lily Woodward | 13 | BelperMarlin | 2:00.00 |
| 7 | 4 | Eva Rolfe | 12 | Eckington | 2:10.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Caitlin Thompson | 12 | Hucknall | 1:41.61 |
| 2 | 13 | Jessica Wass | 15 | Derby Excel | 1:40.00 |
| 3 | 15 | Robyn Robertson | 12 | Ilkeston | 1:39.36 |
| 4 | 17 | Charlotte Denon | 13 | Eckington | 1:35.71 |
| 5 | 16 | Zara Jefferies | 13 | Matlock | 1:35.94 |
| 6 | 14 | Scarlett Howe | 13 | DerbyPhoenix | 1:39.64 |
| 7 | 12 | Molly Thompson | 12 | Repton | 1:41.05 |
| 8 | 10 | Lottie Wilton | 12 | Long Eaton | 1:42.44 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Grace Sewell | 12 | Chesterfield | 1:33.70 |
| 2 | 21 | Amelia Cutts | 16 | Long Eaton | 1:31.25 |
| 3 | 23 | Lauren McManus | 15 | Eckington | 1:29.71 |
| 4 | 25 | Grace Allmark | 15 | DerbyPhoenix | 1:26.52 |
| 5 | 24 | Sophie Conway | 14 | Lichfield | 1:28.33 |
| 6 | 22 | Aaliyah Diskin | 17 | Derby Excel | 1:30.00 |
| 7 | 20 | Olivia Jelley | 13 | BelperMarlin | 1:32.58 |
| 8 | 18 | Christabella Turner | 14 | Eckington | 1:35.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 28 | Elena Jones | 14 | Derby Excel | 1:21.80 |
| 2 | 30 | Sophie Dale | 14 | Hucknall | 1:20.00 |
| 3 | 32 | Lauren Tomlinson | 18 | BelperMarlin | 1:19.07 |
| 4 | 34 | Scarlett Sampson | 14 | Eckington | 1:16.90 |
| 5 | 33 | Elodie Heron | 14 | Derby Excel | 1:17.01 |
| 6 | 31 | Roisin Power | 12 | DerbyPhoenix | 1:19.10 |
| 7 | 29 | Isla Perry-Taylor | 16 | BelperMarlin | 1:21.41 |
| 8 | 26 | Chloe Darling | 12 | Bilston | 1:26.21 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 36 | Bailey Carter | 15 | Eckington | 1:16.24 |
| 2 | 38 | Isla Johnson | 12 | BelperMarlin | 1:15.50 |
| 3 | 40 | Connie Bunhejee | 12 | Derby Excel | 1:14.03 |
| 4 | 43 | Emma Jane Rantzen | 13 | BelperMarlin | 1:10.10 |
| 5 | 42 | Katy Wright | 14 | Derby Excel | 1:13.00 |
| 6 | 39 | Olivia Male | 12 | Derby Excel | 1:15.40 |
| 7 | 37 | I Parsons-Loades | 12 | Repton | 1:15.70 |
| 8 | 35 | Amelie Lincoln | 16 | BelperMarlin | 1:16.55 |