EVENT 304 Girls 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Madeline SURTEES | 11 | Grantham | |
| 4 | 2 | Eden DYSON | 12 | Grantham | |
| 5 | 3 | Emily CLAYTON | 9 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Ella Bele KHAMA | 9 | Grantham | |
| 2 | 5 | Juliette KIM | 8 | Grantham | |
| 3 | 6 | Evangeline KINNEAR | 10 | Grantham | |
| 4 | 7 | Abigail TAYLOR | 9 | Grantham | 1:06.18 |
| 5 | 8 | Hollie-Ann CROOK | 9 | Grantham | 1:03.52 |
| 6 | 9 | Sophie GILL | 12 | Grantham | 1:00.26 |
| 7 | 10 | Elisabeth KINNEAR | 13 | Grantham | 54.89 |
| 8 | 11 | Helena HAMILTON | 12 | Grantham | 52.18 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Isabelle CLAYTON | 11 | Grantham | 48.79 |
| 2 | 13 | Ava-Grace GREGORY | 11 | Grantham | 48.75 |
| 3 | 14 | Charlotte JAY | 11 | Grantham | 48.20 |
| 4 | 15 | Elizabeth JONES | 13 | Grantham | 47.28 |
| 5 | 16 | Sophie PERKINS | 12 | Grantham | 46.23 |
| 6 | 17 | Poppy HATHWAY | 12 | Grantham | 46.12 |
| 7 | 18 | Mia PARAPIJONAVICIUTE. | 14 | Grantham | 44.70 |
| 8 | 20 | Octavia SHEARN | 11 | Grantham | 44.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Lucy ABBOTT | 11 | Grantham | 41.80 |
| 2 | 22 | Charlotte GILL | 15 | Grantham | 41.28 |
| 3 | 23 | Juliette KING | 11 | Grantham | 41.27 |
| 4 | 24 | E LERESCHE HANDS | 12 | Grantham | 41.19 |
| 5 | 25 | Amy TAYLOR | 12 | Grantham | 40.35 |
| 6 | 26 | Isobel ALLSOP | 13 | Grantham | 40.33 |
| 7 | 27 | Lucy WILLATTS | 12 | Grantham | 39.11 |
| 8 | 28 | Annie WEBSTER | 11 | Grantham | 38.88 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Darcey WOOD | 12 | Grantham | 37.71 |
| 2 | 30 | Annabelle JAY | 12 | Grantham | 37.53 |
| 3 | 31 | Isla GRAY | 13 | Grantham | 37.34 |
| 4 | 32 | Alexa WRIGHT | 15 | Grantham | 36.78 |
| 5 | 33 | Grace HOWITT | 14 | Grantham | 36.76 |
| 6 | 35 | Jemma MUNRO | 15 | Grantham | 35.88 |
| 7 | 36 | Sascha NEL | 13 | Grantham | 35.73 |
| 8 | 37 | Rianna ABBOTT | 15 | Grantham | 35.66 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 39 | Harriet MCCORMACK | 14 | Grantham | 34.44 |
| 2 | 41 | Emilie WEBB | 13 | Grantham | 32.97 |
| 3 | 44 | Grace TURNER | 16 | Grantham | 30.60 |
| 4 | 46 | Evie TURNER | 17 | Grantham | 30.60 |
| 5 | 45 | Grace MACDONALD | 14 | Grantham | 30.60 |
| 6 | 42 | Holly GRIFFIN | 17 | Grantham | 32.11 |
| 7 | 40 | Ellena HOWITT | 12 | Grantham | 33.46 |
| 8 | 38 | Sophie WARD | 14 | Grantham | 35.47 |