EVENT 38 Female 100m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Lola HATCH | 11 | Gainsborough | 2:20.00 |
| 4 | 2 | Leela-Mya EDWARDS | 11 | Gainsborough | 2:20.00 |
| 5 | 3 | Elizabeth MAINWARING | 12 | Boston | 2:10.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Tabitha GODDARD | 9 | Grantham | 2:06.89 |
| 2 | 5 | Tabitha LAMBERT | 10 | Lincoln Vulc | 2:02.98 |
| 3 | 6 | Isabelle TEASDALE | 9 | Louth | 1:58.00 |
| 4 | 7 | Bethany MEAKIN | 11 | Grantham | 1:57.68 |
| 5 | 8 | Matilda HARPER | 10 | Grantham | 1:57.31 |
| 6 | 9 | Ella FRANCIS | 9 | Boston | 1:55.66 |
| 7 | 10 | Lillian ROBSON | 11 | Lincoln Vulc | 1:55.16 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Evie BURGESS | 11 | Lincoln Vulc | 1:53.93 |
| 2 | 12 | Megan PERKIN | 11 | Lincoln Vulc | 1:52.82 |
| 3 | 13 | Elsie WOOD | 9 | Louth | 1:51.52 |
| 4 | 14 | Isla GARNETT | 11 | Lincoln Vulc | 1:50.81 |
| 5 | 15 | Edith TEMPLEMAN | 9 | Louth | 1:49.17 |
| 6 | 16 | Niamh O'CONNOR | 12 | Louth | 1:48.72 |
| 7 | 17 | Annabelle SEAGROATT | 10 | Louth | 1:48.64 |
| 8 | 18 | Elizabeth GARLICK | 10 | Louth | 1:47.54 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Lily MULCAHY | 13 | Lincoln Vulc | 1:47.25 |
| 2 | 20 | Rian TEMPEST | 10 | Skegness | 1:47.00 |
| 3 | 21 | Suzuki CARTER | 11 | Skegness | 1:45.00 |
| 4 | 22 | Evelyn NICHOLLS | 12 | Grantham | 1:43.67 |
| 5 | 23 | Jessica REEVES | 12 | Lincoln Vulc | 1:42.86 |
| 6 | 24 | Nancy FRENCH | 10 | Louth | 1:42.78 |
| 7 | 25 | Abigail TAYLOR | 12 | Grantham | 1:42.14 |
| 8 | 26 | Alessia NICASSIO | 13 | Louth | 1:39.19 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Erin MELLER | 12 | Louth | 1:37.71 |
| 2 | 28 | Isabel SORBY | 13 | Skegness | 1:35.96 |
| 3 | 29 | Olivia CHARITY | 14 | Grantham | 1:35.73 |
| 4 | 30 | Scarlett ROBERTS | 12 | Lincoln Vulc | 1:35.42 |
| 5 | 31 | Ophelia GOODALE | 11 | Deepings | 1:34.51 |
| 6 | 32 | Alicja ODROBINSKA | 13 | Deepings | 1:34.17 |
| 7 | 33 | Jasmine CHEETHAM | 12 | Lincoln Vulc | 1:33.57 |
| 8 | 34 | Lily HALE | 11 | Skegness | 1:32.54 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | C TOH-GRUDZINSKI | 9 | Lincoln Vulc | 1:32.50 |
| 2 | 36 | Sophia CUFFLEY | 10 | Lincoln Vulc | 1:32.28 |
| 3 | 37 | Maisie DARBY | 15 | Lincoln Vulc | 1:31.27 |
| 4 | 38 | Jessica SPECK | 15 | Lincoln Vulc | 1:30.82 |
| 5 | 39 | Florence HARPER | 13 | Grantham | 1:30.67 |
| 6 | 40 | Anastasiia KUDRIAVETS | 14 | Deepings | 1:29.75 |
| 7 | 41 | Amaya MONTEALEGRE | 12 | Lincoln Vulc | 1:29.53 |
| 8 | 42 | Izabella ZANIEWSKA | 13 | Boston | 1:29.05 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 43 | Phoebe CHARMAN | 16 | Lincoln TSA | 1:28.84 |
| 2 | 44 | Alice SOWDEN | 11 | Gainsborough | 1:28.48 |
| 3 | 45 | Chloe APPLEWHITE | 10 | Gainsborough | 1:28.00 |
| 4 | 47 | Ella-Rose HUNTER | 13 | Lincoln Vulc | 1:27.41 |
| 5 | 48 | Esme APPLEWHITE | 12 | Gainsborough | 1:26.62 |
| 6 | 49 | Ava-Grace GREGORY | 14 | Grantham | 1:26.38 |
| 7 | 50 | Madeline SURTEES | 13 | Grantham | 1:26.21 |
| 8 | 51 | Honey FLOWER | 11 | Grantham | 1:26.13 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 52 | Caitlin CROSS | 13 | Lincoln Vulc | 1:24.95 |
| 2 | 53 | Evie DAVIES | 13 | Deepings | 1:24.81 |
| 3 | 54 | Luiza KOZIOL | 17 | Lincoln TSA | 1:24.78 |
| 4 | 55 | Poppy CHAPMAN | 14 | Louth | 1:23.71 |
| 5 | 56 | Ella HE | 13 | Gainsborough | 1:23.39 |
| 6 | 57 | Emilija IVANOVA | 17 | Boston | 1:23.10 |
| 7 | 58 | Robyn CROSS | 13 | Lincoln Vulc | 1:22.68 |
| 8 | 59 | Iris FRENCH | 15 | Lincoln Vulc | 1:22.63 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 60 | Zoe JONES | 13 | Louth | 1:20.82 |
| 2 | 61 | Annabel SHEPHERD | 13 | Deepings | 1:20.41 |
| 3 | 62 | Madeleine SEAGROATT | 13 | Louth | 1:20.03 |
| 4 | 63 | Charlotte TURNER | 15 | Lincoln Vulc | 1:19.54 |
| 5 | 64 | Lucy ABBOTT | 14 | Grantham | 1:19.35 |
| 6 | 65 | Amy BARKER | 12 | Lincoln Vulc | 1:18.86 |
| 7 | 66 | Olivia KING | 14 | Deepings | 1:17.13 |
| 8 | 67 | Arabella PEARCE | 13 | Louth | 1:16.91 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 70 | Isobel VAUSE | 17 | Deepings | 1:16.04 |
| 2 | 72 | Lizzy LERESCHE HANDS | 14 | Grantham | 1:14.61 |
| 3 | 74 | Suzanna BURKE | 14 | Louth | 1:12.03 |
| 4 | 76 | Maisie MATTHEWS | 15 | Louth | 1:09.29 |
| 5 | 75 | Emily TALKES | 14 | Grantham | 1:11.58 |
| 6 | 73 | Amelia BIRD | 15 | Skegness | 1:12.57 |
| 7 | 71 | Sally NORMAN | 38 | Boston | 1:15.95 |
| 8 | 68 | Amy TAYLOR | 14 | Grantham | 1:16.27 |