EVENT 633 Female 13/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Ellie Smith | 14 | Corby | 1:31.91 |
| 2 | 8 | Bella Gipson | 14 | Corby | 1:26.00 |
| 3 | 14 | Georgia Parker | 15 | Corby | 1:17.60 |
| 4 | 20 | A Thorpe-Williams | 14 | Northampton | 1:13.36 |
| 5 | 17 | Beth Rebhan | 15 | Corby | 1:13.80 |
| 6 | 11 | Jessica Barrett | 14 | Corby | 1:20.70 |
| 7 | 5 | Alexandra Soltoianu | 15 | Corby | 1:30.62 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 3 | Amelia Heatherington | 15 | Daventry | 1:31.50 |
| 2 | 9 | Georgina Beeby | 15 | Kettering | 1:22.60 |
| 3 | 15 | Riley Weber | 13 | Corby | 1:17.40 |
| 4 | 21 | Phillippa Cutmore | 14 | Corby | 1:10.50 |
| 5 | 18 | Kimberley Hayes | 15 | Northampton | 1:13.45 |
| 6 | 12 | Isabelle Pawlowski | 14 | Corby | 1:20.53 |
| 7 | 6 | Olive Coppa | 14 | Corby | 1:27.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Amelie Tanner | 15 | Corby | 1:31.50 |
| 2 | 10 | Vida Coulson | 13 | Northampton | 1:21.90 |
| 3 | 16 | Martha Blake | 14 | Corby | 1:14.70 |
| 4 | 22 | Holly Coleman | 15 | Corby | 1:07.05 |
| 5 | 19 | Elisa Giraud | 14 | Corby | 1:13.40 |
| 6 | 13 | Martha Booker | 14 | Wellingboro | 1:18.60 |
| 7 | 7 | Poppy Okeife | 13 | Daventry | 1:26.40 |
| 8 | 1 | Isla Adams | 13 | Northampton | 1:33.20 |