EVENT 330 Female 13/15 Yrs 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Sophie Marshall | 13 | Corby | |
| 4 | 4 | Jasmin Dodds | 14 | Wellingboro | |
| 5 | 3 | Emily Daraban | 13 | Northampton | |
| 6 | 1 | Lacey-Mae Clark | 13 | Daventry | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Lacey Broadway | 14 | Wellingboro | |
| 2 | 8 | Esme Smith | 13 | Corby | 39.89 |
| 3 | 10 | Emma Chamberlain | 13 | Wellingboro | 39.85 |
| 4 | 12 | Abigail Tomlinson | 13 | Corby | 40.99 |
| 5 | 11 | Sara-Maria Caia | 14 | Corby | |
| 6 | 9 | Isobelle Fennell | 15 | Daventry | |
| 7 | 7 | Charlotte Redding | 14 | Wellingboro | |
| 8 | 5 | Eva Maisie Livesey | 14 | Daventry | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Amber Jennings | 14 | Daventry | |
| 2 | 16 | Eadie Gries | 14 | Daventry | |
| 3 | 18 | Emma Affleck | 15 | Kettering | 37.00 |
| 4 | 20 | Amelie Tanner | 15 | Corby | |
| 5 | 19 | Saxon Swann | 15 | Corby | |
| 6 | 17 | Grace Walkland | 13 | Daventry | |
| 7 | 15 | Gwen Mackenzie-Wilson | 13 | Wellingboro | 38.98 |
| 8 | 13 | Zosia Holt | 14 | Rushden | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Mara Rizac | 15 | Kettering | |
| 2 | 24 | Emma Chirila | 13 | Kettering | 38.63 |
| 3 | 26 | Zoe Larmour | 14 | Daventry | |
| 4 | 28 | Eleanor Burstall | 15 | Nene Valley | |
| 5 | 27 | Chloe Perkins | 15 | Kettering | |
| 6 | 25 | Willow Lera | 13 | Rushden | 38.74 |
| 7 | 23 | Ellie Smith | 14 | Corby | |
| 8 | 21 | Bella Gipson | 14 | Corby | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Olivia Balthasar | 13 | Brackley SC | 38.23 |
| 2 | 38 | Jessica Barrett | 14 | Corby | 34.98 |
| 3 | 44 | Riley Weber | 13 | Corby | 33.61 |
| 4 | 50 | Martha Blake | 14 | Corby | 33.15 |
| 5 | 47 | Phillippa Cutmore | 14 | Corby | 33.28 |
| 6 | 41 | Georgia Parker | 15 | Corby | 34.88 |
| 7 | 35 | Olive Coppa | 14 | Corby | |
| 8 | 29 | Amelia Heatherington | 15 | Daventry | 36.48 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 33 | Georgina Beeby | 15 | Kettering | 36.50 |
| 2 | 39 | Skylar Glendenning | 14 | Corby | 35.31 |
| 3 | 45 | Martha Booker | 14 | Wellingboro | 33.44 |
| 4 | 51 | A Thorpe-Williams | 14 | Northampton | 32.90 |
| 5 | 48 | Kimberley Hayes | 15 | Northampton | 32.21 |
| 6 | 42 | Neve Booker | 14 | Wellingboro | 34.49 |
| 7 | 36 | Isabelle Pawlowski | 14 | Corby | 36.16 |
| 8 | 30 | Lucy Bolton | 15 | Rushden | 36.37 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 34 | M Plakogianni | 15 | Kettering | 36.77 |
| 2 | 40 | Kennedy McHugh | 15 | Corby | 37.67 |
| 3 | 46 | Beth Rebhan | 15 | Corby | 34.85 |
| 4 | 52 | Holly Coleman | 15 | Corby | 30.78 |
| 5 | 49 | Elisa Giraud | 14 | Corby | 34.91 |
| 6 | 43 | Poppy Okeife | 13 | Daventry | 36.41 |
| 7 | 37 | Safiyah Pawlyszyn | 14 | Wellingboro | 36.20 |
| 8 | 31 | Matilda Johnson | 15 | Kettering | |