EVENT 405 Girls 50m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Hannah DOBNEY | 14 | Grantham | |
| 2 | 2 | Julia KOLASA | 9 | Grantham | |
| 3 | 3 | Evangeline KINNEAR | 10 | Grantham | 1:11.73 |
| 4 | 4 | Emmeline GLEAVE | 8 | Grantham | 1:11.04 |
| 5 | 5 | Juliette KIM | 8 | Grantham | 1:08.43 |
| 6 | 6 | Emily CLAYTON | 9 | Grantham | 1:04.54 |
| 7 | 7 | Hollie-Ann CROOK | 9 | Grantham | 1:02.00 |
| 8 | 8 | Abigail TAYLOR | 9 | Grantham | 1:00.61 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Madeline SURTEES | 11 | Grantham | 59.78 |
| 2 | 10 | F PERRATON-WILLIAMS | 11 | Grantham | 58.64 |
| 3 | 12 | Sophie PERKINS | 12 | Grantham | 57.07 |
| 4 | 13 | Poppy HATHWAY | 12 | Grantham | 56.83 |
| 5 | 14 | Sophie GILL | 12 | Grantham | 56.16 |
| 6 | 15 | Eden DYSON | 12 | Grantham | 55.90 |
| 7 | 16 | Elizabeth JONES | 13 | Grantham | 55.59 |
| 8 | 17 | Elisabeth KINNEAR | 13 | Grantham | 54.52 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Helena HAMILTON | 12 | Grantham | 54.12 |
| 2 | 19 | Ava-Grace GREGORY | 11 | Grantham | 53.71 |
| 3 | 20 | Charlotte JAY | 11 | Grantham | 52.80 |
| 4 | 21 | Ella Bele KHAMA | 9 | Grantham | 52.14 |
| 5 | 22 | Isabelle CLAYTON | 11 | Grantham | 52.13 |
| 6 | 23 | Charlotte GILL | 15 | Grantham | 49.96 |
| 7 | 24 | Octavia SHEARN | 11 | Grantham | 49.67 |
| 8 | 25 | Juliette KING | 11 | Grantham | 49.25 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Sascha NEL | 13 | Grantham | 47.95 |
| 2 | 27 | Lexie SHEWAN | 13 | Grantham | 47.69 |
| 3 | 28 | E LERESCHE HANDS | 12 | Grantham | 47.21 |
| 4 | 29 | Annie WEBSTER | 11 | Grantham | 46.93 |
| 5 | 30 | Lucy ABBOTT | 11 | Grantham | 46.04 |
| 6 | 31 | Lucy WILLATTS | 12 | Grantham | 45.58 |
| 7 | 32 | Amelia HATHWAY | 14 | Grantham | 45.53 |
| 8 | 34 | Annabelle JAY | 12 | Grantham | 44.98 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Mia PARAPIJONAVICIUTE. | 14 | Grantham | 44.46 |
| 2 | 36 | Darcey WOOD | 12 | Grantham | 43.70 |
| 3 | 37 | Ellena HOWITT | 12 | Grantham | 42.97 |
| 4 | 38 | Amy TAYLOR | 12 | Grantham | 42.44 |
| 5 | 39 | Grace HOWITT | 14 | Grantham | 42.33 |
| 6 | 40 | Harriet MCCORMACK | 14 | Grantham | 41.73 |
| 7 | 41 | Jessica - Rose DAVISON | 14 | Grantham | 41.63 |
| 8 | 42 | Alexa WRIGHT | 15 | Grantham | 41.35 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 44 | Sophie WARD | 14 | Grantham | 39.00 |
| 2 | 47 | Emilie WEBB | 13 | Grantham | 38.30 |
| 3 | 49 | Isla GRAY | 13 | Grantham | 37.84 |
| 4 | 51 | Grace MACDONALD | 14 | Grantham | 36.70 |
| 5 | 50 | Megan BROWN | 14 | Grantham | 37.56 |
| 6 | 48 | Grace TURNER | 16 | Grantham | 37.85 |
| 7 | 46 | Isobel ALLSOP | 13 | Grantham | 38.40 |
| 8 | 43 | Rianna ABBOTT | 15 | Grantham | 40.88 |