EVENT 205 Female 09 /Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Evelyn NICHOLLS | 11 | Grantham | |
| 2 | 2 | Lucia CORTON | 10 | Grantham | |
| 3 | 3 | Matilda HARPER | 9 | Grantham | |
| 4 | 4 | Dixie DITCHBURN | 10 | Grantham | |
| 5 | 5 | Elizabeth MAINWARING | 11 | Boston | 2:33.88 |
| 6 | 6 | Mia WILLIAMS | 11 | Lincoln Vulc | 2:20.44 |
| 7 | 7 | Megan PERKIN | 10 | Lincoln Vulc | 2:18.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | C TOH-GRUDZINSKI | 9 | Lincoln Vulc | 2:10.00 |
| 2 | 9 | Hollie FORSYTH | 9 | Lincoln Vulc | 2:05.00 |
| 3 | 10 | Poppy BRODIE | 12 | Grantham | 2:03.88 |
| 4 | 11 | Abigail TAYLOR | 11 | Grantham | 2:02.63 |
| 5 | 12 | Emily CLAYTON | 11 | Grantham | 2:01.59 |
| 6 | 13 | Annabel HILLSON | 10 | Grantham | 1:59.20 |
| 7 | 14 | Amelia BELL | 13 | Lincoln Vulc | 1:59.19 |
| 8 | 15 | Matilda MCDONNELL | 12 | Grantham | 1:56.61 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | River JOHNSON | 12 | March | 1:55.80 |
| 2 | 17 | Ruby TALKES | 9 | Lincoln Vulc | 1:53.20 |
| 3 | 18 | Alice SOWDEN | 10 | Gainsborough | 1:53.00 |
| 4 | 19 | India LAZENBY | 11 | March | 1:52.30 |
| 5 | 20 | Colette GRANTHAM | 11 | Lincoln Vulc | 1:50.29 |
| 6 | 21 | Florence HARPER | 12 | Grantham | 1:49.97 |
| 7 | 22 | Elizabeth JONES | 14 | Grantham | 1:48.45 |
| 8 | 23 | Ruby-May CRANFIELD | 11 | March | 1:48.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Maisie DARBY | 14 | Lincoln Vulc | 1:48.20 |
| 2 | 25 | Madeline SURTEES | 12 | Grantham | 1:47.32 |
| 3 | 26 | Emmeline GLEAVE | 9 | Grantham | 1:47.30 |
| 4 | 27 | Harriet FEAVIOUR | 10 | March | 1:47.02 |
| 5 | 28 | Elisabeth KINNEAR | 15 | Grantham | 1:45.55 |
| 6 | 29 | Octavia SHEARN | 12 | Grantham | 1:44.94 |
| 7 | 30 | Hollie-Ann CROOK | 11 | Grantham | 1:44.04 |
| 8 | 31 | Sophie OWEN | 13 | Lincoln Vulc | 1:43.37 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Sara CONTRACTOR | 11 | OadbyWigston | 1:42.38 |
| 2 | 33 | Ava-Grace GREGORY | 13 | Grantham | 1:42.24 |
| 3 | 34 | Chelsea TODD | 15 | Lincoln Vulc | 1:41.40 |
| 4 | 35 | Jessica ROBERTS | 14 | Lincoln Vulc | 1:40.12 |
| 5 | 36 | Ekaterina KARUBOVA | 13 | Lincoln Vulc | 1:39.70 |
| 6 | 37 | Esme APPLEWHITE | 11 | Gainsborough | 1:39.48 |
| 7 | 38 | Ella KHAMA | 11 | Grantham | 1:39.00 |
| 8 | 39 | Juliette KING | 13 | Grantham | 1:38.95 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Emilija IVANOVA | 16 | Boston | 1:38.64 |
| 2 | 41 | Peyton BRIGHT | 14 | Lincoln Vulc | 1:38.62 |
| 3 | 42 | Arin ELVIDGE | 11 | Lincoln Vulc | 1:37.56 |
| 4 | 43 | Isabelle CLAYTON | 12 | Grantham | 1:37.02 |
| 5 | 44 | Ella-Rose HUNTER | 12 | Lincoln Vulc | 1:36.48 |
| 6 | 45 | Erin NORTON | 14 | Boston | 1:35.98 |
| 7 | 46 | Martha PIERCEY | 14 | Skegness | 1:35.59 |
| 8 | 47 | Elena ALDENHOFF-KELLY | 16 | Grantham | 1:35.50 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 48 | Evie NEWMAN | 12 | Lincoln Vulc | 1:34.94 |
| 2 | 49 | Eleanor BIRINY | 14 | Lincoln Vulc | 1:34.58 |
| 3 | 50 | Margot MARKS | 11 | Lincoln Vulc | 1:33.80 |
| 4 | 51 | Lucy ABBOTT | 13 | Grantham | 1:33.78 |
| 5 | 52 | Kitty PAYNE | 14 | March | 1:33.23 |
| 6 | 53 | Charlotte TURNER | 14 | Lincoln Vulc | 1:32.18 |
| 7 | 55 | Mia JONES | 12 | March | 1:31.40 |
| 8 | 56 | Isla LORMOR | 12 | Gainsborough | 1:30.72 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 57 | Brooke HEMMINGS | 15 | Lincoln Vulc | 1:30.51 |
| 2 | 58 | Lizzy LERESCHE HANDS | 13 | Grantham | 1:30.50 |
| 3 | 59 | Grace HOWITT | 16 | Grantham | 1:30.11 |
| 4 | 60 | Molly CRAUGHAN | 13 | Lincoln Vulc | 1:28.93 |
| 5 | 61 | Freya SHARPE | 12 | Lincoln Vulc | 1:27.70 |
| 6 | 62 | Karolina PARKINSON | 15 | Lincoln Vulc | 1:26.50 |
| 7 | 63 | Ella BLACKBOURN | 16 | Lincoln Vulc | 1:26.03 |
| 8 | 64 | Mia PARAPIJONAVICIUTE | 16 | Grantham | 1:25.78 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 66 | Zoe THOMPSON | 12 | Co Ely | 1:24.35 |
| 2 | 68 | Megan LAMB | 15 | Lincoln Vulc | 1:24.11 |
| 3 | 71 | Evie LILLEY | 16 | Lincoln Vulc | 1:21.00 |
| 4 | 73 | Isla GRAY | 15 | Grantham | 1:17.35 |
| 5 | 72 | Isobel ALLSOP | 15 | Grantham | 1:20.05 |
| 6 | 69 | Lily-May CLARK | 12 | Grantham | 1:21.90 |
| 7 | 67 | Amy TAYLOR | 14 | Grantham | 1:24.30 |
| 8 | 65 | Lucy WILLATTS | 13 | Grantham | 1:25.71 |