EVENT 306 Girls 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Evangeline KINNEAR | 10 | Grantham | |
| 3 | 2 | E LERESCHE HANDS | 12 | Grantham | |
| 4 | 3 | Madeline SURTEES | 11 | Grantham | |
| 5 | 4 | Ella Bele KHAMA | 9 | Grantham | |
| 6 | 5 | Hollie-Ann CROOK | 9 | Grantham | |
| 7 | 6 | Emily CLAYTON | 9 | Grantham | 2:15.41 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Abigail TAYLOR | 9 | Grantham | 2:10.06 |
| 2 | 8 | Sophie GILL | 12 | Grantham | 2:01.70 |
| 3 | 9 | Eden DYSON | 12 | Grantham | 1:49.67 |
| 4 | 10 | Lucy ABBOTT | 11 | Grantham | 1:44.85 |
| 5 | 11 | Sophie PERKINS | 12 | Grantham | 1:44.67 |
| 6 | 12 | Isabelle CLAYTON | 11 | Grantham | 1:41.99 |
| 7 | 13 | Octavia SHEARN | 11 | Grantham | 1:40.23 |
| 8 | 14 | Elisabeth KINNEAR | 13 | Grantham | 1:39.96 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Charlotte JAY | 11 | Grantham | 1:38.65 |
| 2 | 16 | Poppy HATHWAY | 12 | Grantham | 1:34.16 |
| 3 | 17 | Charlotte GILL | 15 | Grantham | 1:33.35 |
| 4 | 18 | Mia PARAPIJONAVICIUTE. | 14 | Grantham | 1:30.83 |
| 5 | 19 | Annie WEBSTER | 11 | Grantham | 1:30.71 |
| 6 | 20 | Amy TAYLOR | 12 | Grantham | 1:28.50 |
| 7 | 21 | Sascha NEL | 13 | Grantham | 1:28.27 |
| 8 | 22 | Lexie SHEWAN | 13 | Grantham | 1:27.47 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Darcey WOOD | 12 | Grantham | 1:26.93 |
| 2 | 24 | Ellena HOWITT | 12 | Grantham | 1:24.88 |
| 3 | 25 | Annabelle JAY | 12 | Grantham | 1:22.74 |
| 4 | 26 | Amelia HATHWAY | 14 | Grantham | 1:22.46 |
| 5 | 27 | Lucy WILLATTS | 12 | Grantham | 1:20.73 |
| 6 | 28 | Grace HOWITT | 14 | Grantham | 1:20.48 |
| 7 | 29 | Alexa WRIGHT | 15 | Grantham | 1:20.10 |
| 8 | 30 | Harriet MCCORMACK | 14 | Grantham | 1:19.30 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Sophie WARD | 14 | Grantham | 1:16.78 |
| 2 | 34 | Rianna ABBOTT | 15 | Grantham | 1:16.03 |
| 3 | 38 | Evie TURNER | 17 | Grantham | 1:08.85 |
| 4 | 40 | Grace MACDONALD | 14 | Grantham | 1:03.70 |
| 5 | 39 | Grace TURNER | 16 | Grantham | 1:08.68 |
| 6 | 36 | Emilie WEBB | 13 | Grantham | 1:12.61 |
| 7 | 33 | Isobel ALLSOP | 13 | Grantham | 1:16.70 |
| 8 | 31 | Jemma MUNRO | 15 | Grantham | 1:18.10 |