EVENT 205 Female 09/Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Daisy-Grace WILDISH | 9 | Retford | |
| 4 | 3 | Evangeline KINNEAR | 10 | Grantham | 2:20.79 |
| 5 | 2 | Suzuki CARTER | 9 | Skegness | 2:52.37 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Annabel HILLSON | 9 | Grantham | 2:10.00 |
| 3 | 7 | Matilda MCDONNELL | 11 | Grantham | 2:07.61 |
| 4 | 10 | Abigail TAYLOR | 10 | Grantham | 2:06.40 |
| 5 | 9 | Florence HARPER | 11 | Grantham | 2:07.10 |
| 6 | 6 | Esme APPLEWHITE | 10 | Gainsborough | 2:09.49 |
| 7 | 4 | Honey FLOWER | 9 | Grantham | 2:10.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Olivia CHARITY | 12 | Grantham | 2:04.20 |
| 2 | 14 | Emily CLAYTON | 10 | Grantham | 2:02.06 |
| 3 | 16 | Lilly THROWER | 10 | Louth | 1:59.49 |
| 4 | 18 | Hollie-Anne CROOK | 10 | Grantham | 1:56.10 |
| 5 | 17 | Willow HIBBITT | 9 | Melton M'bry | 1:58.93 |
| 6 | 15 | Emmie DENIGAN | 10 | Melton M'bry | 2:01.35 |
| 7 | 13 | Evie BOURNE | 11 | Melton M'bry | 2:03.00 |
| 8 | 11 | Elizabeth FAHEY | 10 | Newark | 2:06.24 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Boglarka ELEK | 10 | Melton M'bry | 1:53.52 |
| 2 | 22 | Helena HAMILTON | 12 | Grantham | 1:51.99 |
| 3 | 24 | Paris CABORN | 11 | Louth | 1:51.16 |
| 4 | 26 | Isla-Rose WILDISH | 10 | Retford | 1:47.80 |
| 5 | 25 | Octavia SHEARN | 11 | Grantham | 1:49.19 |
| 6 | 23 | Amy FOSTER | 10 | Louth | 1:51.73 |
| 7 | 21 | Ella KHAMA | 10 | Grantham | 1:52.30 |
| 8 | 19 | Holly GLASSFORD | 10 | Melton M'bry | 1:54.39 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 28 | Ava-Grace GREGORY | 12 | Grantham | 1:47.60 |
| 2 | 30 | Elisabeth KINNEAR | 14 | Grantham | 1:46.69 |
| 3 | 32 | Mia JONES | 11 | March | 1:45.21 |
| 4 | 34 | Minerva WILLIAMS | 12 | Melton M'bry | 1:42.58 |
| 5 | 33 | Isabelle CLAYTON | 11 | Grantham | 1:44.53 |
| 6 | 31 | Emily SMITH | 14 | Boston | 1:45.88 |
| 7 | 29 | Poppy CHAPMAN | 12 | Louth | 1:46.91 |
| 8 | 27 | Abbie MACKIE | 14 | March | 1:47.63 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 37 | Erin NORTON | 13 | Boston | 1:40.70 |
| 2 | 39 | Juliette KING | 12 | Grantham | 1:38.95 |
| 3 | 41 | Charlotte JAY | 11 | Grantham | 1:38.06 |
| 4 | 43 | Annie WEBSTER | 12 | Grantham | 1:36.22 |
| 5 | 42 | Mia PARAPIJONAVICIUTE | 15 | Grantham | 1:37.57 |
| 6 | 40 | Annie LIDDLE | 12 | Mansfield | 1:38.17 |
| 7 | 38 | Lucy ABBOTT | 12 | Grantham | 1:39.47 |
| 8 | 36 | Lillie DRENNAN | 14 | Melton M'bry | 1:41.38 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 45 | Elena ALDENHOFF-KELLY | 15 | Grantham | 1:33.09 |
| 2 | 47 | Lizzy LERESCHE HANDS | 12 | Grantham | 1:32.81 |
| 3 | 49 | Sophie SHARPE | 13 | Melton M'bry | 1:31.97 |
| 4 | 51 | Harriet MCCORMACK | 14 | Grantham | 1:31.04 |
| 5 | 50 | Lucy WILLATTS | 12 | Grantham | 1:31.79 |
| 6 | 48 | Grace HOWITT | 15 | Grantham | 1:32.34 |
| 7 | 46 | Jessica - Rose DAVISON | 14 | Grantham | 1:32.87 |
| 8 | 44 | Ellena HOWITT | 13 | Grantham | 1:34.79 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 53 | Jane BEECH | 14 | Melton M'bry | 1:27.30 |
| 2 | 55 | Milen MERRITT | 12 | Melton M'bry | 1:24.86 |
| 3 | 57 | Isobel ALLSOP | 14 | Grantham | 1:21.86 |
| 4 | 59 | Isla GRAY | 14 | Grantham | 1:20.40 |
| 5 | 58 | Grace TURNER | 16 | Grantham | 1:20.47 |
| 6 | 56 | Sophie WARD | 14 | Grantham | 1:23.39 |
| 7 | 54 | Amy TAYLOR | 13 | Grantham | 1:25.43 |
| 8 | 52 | Annabelle JAY | 12 | Grantham | 1:30.03 |