EVENT 15 Female 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lily MCCORMICK | 9 | Lincoln TSA | 2:30.49 |
| 2 | 2 | Nina KOZIOL | 11 | Lincoln TSA | 2:25.00 |
| 3 | 3 | Tabitha GODDARD | 9 | Grantham | 2:16.94 |
| 4 | 4 | Ginny PARNHAM | 11 | Lincoln Vulc | 2:02.10 |
| 5 | 5 | Seren TWINLEY | 10 | Deepings | 1:59.21 |
| 6 | 6 | Lillie FIELD | 10 | Louth | 1:51.03 |
| 7 | 7 | Bella COLEMAN | 10 | Gainsborough | 1:50.00 |
| 8 | 8 | Holly LLOYD | 11 | Louth | 1:48.09 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Lillian ROBSON | 11 | Lincoln Vulc | 1:45.59 |
| 2 | 10 | Elsie WENTWORTH | 11 | Lincoln Vulc | 1:45.00 |
| 3 | 11 | Ella FRANCIS | 9 | Boston | 1:42.39 |
| 4 | 12 | Megan PERKIN | 11 | Lincoln Vulc | 1:42.13 |
| 5 | 13 | Bethany MEAKIN | 11 | Grantham | 1:42.09 |
| 6 | 14 | Holly SOUTHWICK | 10 | Lincoln TSA | 1:40.00 |
| 7 | 15 | Lily MULCAHY | 13 | Lincoln Vulc | 1:40.00 |
| 8 | 16 | Annabelle SEAGROATT | 10 | Louth | 1:39.21 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Poppy BRODIE | 13 | Grantham | 1:38.06 |
| 2 | 18 | Daisy BROMLEY | 12 | Lincoln TSA | 1:37.49 |
| 3 | 19 | Evelyn NICHOLLS | 12 | Grantham | 1:35.57 |
| 4 | 20 | Edith TEMPLEMAN | 9 | Louth | 1:35.20 |
| 5 | 21 | Emily CLAYTON | 11 | Grantham | 1:34.39 |
| 6 | 22 | Helena MCLAUGHLIN | 12 | Louth | 1:34.07 |
| 7 | 23 | C TOH-GRUDZINSKI | 9 | Lincoln Vulc | 1:33.93 |
| 8 | 24 | Jessica DAVISON | 12 | Louth | 1:33.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Ada PAGE | 10 | Grantham | 1:32.89 |
| 2 | 26 | Scarlet THOMPSON | 16 | Boston | 1:32.88 |
| 3 | 27 | Darcie BOLES | 12 | Gainsborough | 1:32.81 |
| 4 | 28 | Elsie WOOD | 9 | Louth | 1:32.00 |
| 5 | 29 | Penelope WILKINSON | 11 | Grantham | 1:30.00 |
| 6 | 30 | Matilda HARPER | 10 | Grantham | 1:30.00 |
| 7 | 31 | Michelle ZOLDOWICZ | 13 | Lincoln TSA | 1:29.78 |
| 8 | 32 | Maia PAIGE | 14 | Deepings | 1:29.68 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 33 | Evie SKILLINGTON | 14 | Lincoln Vulc | 1:28.72 |
| 2 | 34 | Skye WARREN | 12 | Lincoln TSA | 1:28.18 |
| 3 | 35 | Yu Tsing (Trixie) CHEU | 12 | Grantham | 1:27.86 |
| 4 | 36 | Eleanor DE ROSE | 11 | Deepings | 1:27.68 |
| 5 | 37 | Francesca WESTON | 11 | Grantham | 1:27.10 |
| 6 | 38 | Kaylee HEMMINGS | 11 | Lincoln Vulc | 1:26.80 |
| 7 | 39 | Francesca BROWNLESS | 10 | Lincoln TSA | 1:26.64 |
| 8 | 40 | Esmé EVANS | 12 | Grantham | 1:26.59 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 41 | Ava LEON-BURTON | 12 | Lincoln Vulc | 1:26.56 |
| 2 | 42 | Elsa STEVENSON | 10 | Lincoln Vulc | 1:26.51 |
| 3 | 43 | Abigail TAYLOR | 12 | Grantham | 1:26.45 |
| 4 | 44 | Chloe GOACHER | 12 | Grantham | 1:25.68 |
| 5 | 45 | Jessica REEVES | 12 | Lincoln Vulc | 1:25.50 |
| 6 | 46 | Elizabeth GARLICK | 10 | Louth | 1:25.24 |
| 7 | 47 | Amelie HUNT | 12 | Deepings | 1:25.00 |
| 8 | 48 | Scarlett ROBERTS | 12 | Lincoln Vulc | 1:24.66 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 49 | A HATCHER BRENNAN | 11 | Deepings | 1:24.43 |
| 2 | 50 | Merryn JOHNSON-ROOK | 13 | Lincoln Vulc | 1:21.90 |
| 3 | 51 | Jessica SPECK | 15 | Lincoln Vulc | 1:21.90 |
| 4 | 52 | Alicja ODROBINSKA | 13 | Deepings | 1:21.70 |
| 5 | 53 | Amaya MONTEALEGRE | 12 | Lincoln Vulc | 1:20.70 |
| 6 | 54 | Lucy MARTIN | 10 | Lincoln Vulc | 1:20.62 |
| 7 | 55 | Abigail WORTHINGTON | 12 | Lincoln Vulc | 1:20.46 |
| 8 | 56 | Juliette KING | 14 | Grantham | 1:20.40 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 57 | Freya COPCUTT | 15 | Lincoln Vulc | 1:20.11 |
| 2 | 58 | Octavia SHEARN | 13 | Grantham | 1:19.40 |
| 3 | 59 | Jasmine CHEETHAM | 12 | Lincoln Vulc | 1:19.37 |
| 4 | 60 | Suzuki CARTER | 11 | Skegness | 1:19.29 |
| 5 | 61 | Lily HALE | 11 | Skegness | 1:18.80 |
| 6 | 62 | Maisie DARBY | 15 | Lincoln Vulc | 1:18.65 |
| 7 | 63 | Caitlynn EDMEADES | 12 | Deepings | 1:18.59 |
| 8 | 64 | Hollie-Ann CROOK | 11 | Grantham | 1:18.48 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 65 | Sophie HODSON | 15 | Deepings | 1:17.80 |
| 2 | 66 | Florence MONAGHAN | 14 | Lincoln TSA | 1:17.40 |
| 3 | 67 | Madeline SURTEES | 13 | Grantham | 1:17.33 |
| 4 | 68 | Izabella ZANIEWSKA | 13 | Boston | 1:16.02 |
| 5 | 69 | Rosie JONES | 15 | Deepings | 1:15.80 |
| 6 | 70 | Sophie HARRISON | 15 | Deepings | 1:15.45 |
| 7 | 71 | Anastasiia KUDRIAVETS | 14 | Deepings | 1:14.90 |
| 8 | 72 | Charlotte BROWNLESS | 14 | Lincoln TSA | 1:14.78 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 73 | Honey FLOWER | 11 | Grantham | 1:14.16 |
| 2 | 74 | Ava-Grace GREGORY | 14 | Grantham | 1:13.89 |
| 3 | 75 | Amy FOSTER | 12 | Louth | 1:13.85 |
| 4 | 76 | Caitlin CROSS | 13 | Lincoln Vulc | 1:13.30 |
| 5 | 77 | Ekaterina KARUBOVA | 14 | Lincoln Vulc | 1:13.20 |
| 6 | 78 | Florence HARPER | 13 | Grantham | 1:13.00 |
| 7 | 79 | Poppy CHAPMAN | 14 | Louth | 1:12.60 |
| 8 | 80 | Annabel SHEPHERD | 13 | Deepings | 1:12.19 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 81 | Ella KHAMA | 12 | Grantham | 1:12.03 |
| 2 | 82 | Mia PARAPIJONAVICIUTE | 17 | Grantham | 1:11.81 |
| 3 | 83 | Freya BOWLES | 14 | Gainsborough | 1:11.36 |
| 4 | 84 | Ella-Rose HUNTER | 13 | Lincoln Vulc | 1:11.30 |
| 5 | 85 | Caitlin BOWLES | 12 | Gainsborough | 1:10.96 |
| 6 | 86 | Lucy ABBOTT | 14 | Grantham | 1:10.40 |
| 7 | 87 | Emilija IVANOVA | 17 | Boston | 1:10.28 |
| 8 | 88 | Thea WHOTTON | 13 | Louth | 1:10.02 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 89 | Sophie OWEN | 14 | Lincoln Vulc | 1:09.93 |
| 2 | 90 | Amy BARKER | 12 | Lincoln Vulc | 1:09.60 |
| 3 | 91 | Isla SCOTT | 15 | Lincoln Vulc | 1:09.43 |
| 4 | 92 | Ellena HOWITT | 14 | Grantham | 1:09.15 |
| 5 | 93 | Martha PIERCEY | 15 | Skegness | 1:08.95 |
| 6 | 94 | Lottie Ava FLATTERS | 13 | Deepings | 1:08.88 |
| 7 | 95 | Evie DAVIES | 13 | Deepings | 1:08.66 |
| 8 | 96 | Ava MACKFALL | 15 | Lincoln Vulc | 1:08.50 |
| Heat Number - 13 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 97 | Margot MARKS | 12 | Lincoln Vulc | 1:08.00 |
| 2 | 98 | Madeleine SEAGROATT | 13 | Louth | 1:07.95 |
| 3 | 99 | Amy TAYLOR | 14 | Grantham | 1:07.79 |
| 4 | 100 | Iris FRENCH | 15 | Lincoln Vulc | 1:07.78 |
| 5 | 101 | Sally NORMAN | 38 | Boston | 1:06.60 |
| 6 | 102 | Lizzy LERESCHE HANDS | 14 | Grantham | 1:06.26 |
| 7 | 103 | Isobel VAUSE | 17 | Deepings | 1:05.87 |
| 8 | 104 | Isla LORMOR | 13 | Gainsborough | 1:04.30 |
| Heat Number - 14 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 106 | Darcey WOOD | 14 | Grantham | 1:03.47 |
| 2 | 108 | Evie LILLEY | 16 | Lincoln Vulc | 1:02.10 |
| 3 | 110 | Suzanna BURKE | 14 | Louth | 1:00.86 |
| 4 | 112 | Emily TALKES | 14 | Grantham | 1:00.00 |
| 5 | 111 | Erin INGHAM | 17 | Louth | 1:00.60 |
| 6 | 109 | Maisie MATTHEWS | 15 | Louth | 1:01.48 |
| 7 | 107 | Jessica - Rose DAVISON | 16 | Grantham | 1:02.63 |
| 8 | 105 | Annabelle JAY | 14 | Grantham | 1:04.01 |