EVENT 102 Female 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 1 | Amelia KASSAM | 15 | Leicester Ne | 1:52.75 |
| 4 | 3 | Morgan SAWYER | 14 | Coalville | 1:50.00 |
| 5 | 2 | River JOLLEY | 15 | Leic Peng | 1:50.75 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 4 | Ruichen LIU | 14 | Loughborough | 1:49.97 |
| 2 | 6 | Willow HIBBITT | 15 | Melton M'bry | 1:48.32 |
| 3 | 8 | Freya ROSE | 14 | Leic Peng | 1:46.20 |
| 4 | 10 | Lexi ELLIS | 13 | Leic Sharks | 1:42.50 |
| 5 | 9 | Sara CONTRACTOR | 14 | Leic Sharks | 1:44.96 |
| 6 | 7 | Mollie SMART | 14 | Coalville | 1:48.06 |
| 7 | 5 | Daisy HARTNETT | 14 | Hinckley | 1:49.42 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 12 | Piper DAVENPORT | 13 | Loughborough | 1:41.99 |
| 2 | 14 | Amelie ARMITAGE | 13 | Leic Sharks | 1:41.46 |
| 3 | 16 | Edie DEXTER | 13 | Leic Peng | 1:40.82 |
| 4 | 18 | Naeva JOSHI | 13 | Leic Sharks | 1:39.60 |
| 5 | 17 | Violet BLACKETT | 13 | Hinckley | 1:40.65 |
| 6 | 15 | Emmie-Rose POWER | 13 | Hinckley | 1:41.26 |
| 7 | 13 | Maddison VELATI | 13 | Loughborough | 1:41.92 |
| 8 | 11 | Elsie BALDWIN | 13 | Hinckley | 1:42.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 20 | Mea MOORE | 13 | Market Har | 1:39.25 |
| 2 | 22 | Uma STEPHENSON | 13 | Market Har | 1:38.45 |
| 3 | 24 | Kaiya LOCKTON | 13 | Loughborough | 1:36.29 |
| 4 | 26 | Jessica RADCLIFFE | 12 | Leicester Ne | 1:35.74 |
| 5 | 25 | Florence LUCAS | 13 | Braunstone | 1:35.90 |
| 6 | 23 | Isla FOWLER | 13 | Coalville | 1:38.20 |
| 7 | 21 | Eireanna GALLAGHER | 13 | Leic Sharks | 1:38.85 |
| 8 | 19 | Hollie SHIELLS | 13 | Leic Sharks | 1:39.56 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 28 | Aimee WALCZAK | 11 | Leic Peng | 1:35.29 |
| 2 | 30 | Minerva WILLIAMS | 12 | Melton M'bry | 1:34.62 |
| 3 | 32 | Ebony COLEMAN | 11 | Coalville | 1:33.92 |
| 4 | 34 | Emily HUTCHINSON | 11 | Coalville | 1:33.40 |
| 5 | 33 | Charlotte LUCAS | 13 | Braunstone | 1:33.54 |
| 6 | 31 | S WILLIAMS-BROWN | 12 | Market Har | 1:34.50 |
| 7 | 29 | Juliet THAI | 12 | Coalville | 1:35.08 |
| 8 | 27 | Ruby RICHARDSON | 12 | Leic Peng | 1:35.43 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 36 | Peta MORLEY | 11 | Hinckley | 1:33.14 |
| 2 | 38 | Ava WEBB | 12 | Coalville | 1:32.58 |
| 3 | 40 | Ivy BROWN | 12 | Melton M'bry | 1:31.82 |
| 4 | 42 | Lola SMITH | 11 | Hinckley | 1:31.34 |
| 5 | 41 | Emilia DURRINGTON | 10 | Braunstone | 1:31.77 |
| 6 | 39 | Ivy LOWE | 12 | Leicester Ne | 1:32.47 |
| 7 | 37 | Danni HALLAM | 10 | Leic Sharks | 1:32.62 |
| 8 | 35 | Rochelle MOORE | 13 | Coalville | 1:33.24 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 44 | Ellie POULTON-BURBANK | 11 | Loughborough | 1:31.19 |
| 2 | 46 | Jade CURRIE | 10 | Leicester Ne | 1:31.15 |
| 3 | 48 | Isabella HILL | 10 | Hinckley | 1:30.56 |
| 4 | 50 | Shivani SHARMA | 13 | Braunstone | 1:30.33 |
| 5 | 49 | Jessica PURSER | 11 | Braunstone | 1:30.43 |
| 6 | 47 | Katherine FLETCHER | 13 | Loughborough | 1:31.07 |
| 7 | 45 | India SAWYER | 12 | Coalville | 1:31.16 |
| 8 | 43 | Marta UCIECHA | 10 | Leicester Ne | 1:31.31 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 53 | Ruby DISSINGTON | 11 | Coalville | 1:30.15 |
| 2 | 55 | Lorena KEOGH | 13 | Leic Sharks | 1:30.00 |
| 3 | 57 | Bethany HENSON | 10 | Coalville | 1:29.86 |
| 4 | 59 | Alexa HARGRAVE | 09 | Loughborough | 1:29.78 |
| 5 | 58 | Olivia BEVAN | 11 | Hinckley | 1:29.79 |
| 6 | 56 | Emily PRESTON | 10 | Market Har | 1:29.96 |
| 7 | 54 | Aimee FRASER | 09 | Hinckley | 1:30.05 |
| 8 | 51 | Harriet JENNINGS | 13 | Market Har | 1:30.22 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 61 | Sophie SHARPE | 10 | Melton M'bry | 1:29.67 |
| 2 | 63 | Chloe MORLEY | 12 | Coalville | 1:29.46 |
| 3 | 65 | Hannawell MEDREY | 88 | Hinckley | 1:28.65 |
| 4 | 67 | Sarah DEW | 07 | Leic Sharks | 1:28.17 |
| 5 | 66 | Sophia TSINONTAS | 10 | Leic Sharks | 1:28.50 |
| 6 | 64 | Florence SENIOR | 10 | Braunstone | 1:28.79 |
| 7 | 62 | Grace HURST | 10 | Leicester Ne | 1:29.59 |
| 8 | 60 | Evie BRAMFORD | 11 | Hinckley | 1:29.77 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 69 | Nicola MICHALSKA | 11 | Leic Sharks | 1:27.50 |
| 2 | 71 | Maia RUIZ SALFITY | 08 | Loughborough | 1:26.91 |
| 3 | 74 | Evelyn PRICE | 08 | Market Har | 1:26.32 |
| 4 | 76 | Jane BEECH | 10 | Melton M'bry | 1:25.56 |
| 5 | 75 | Laura GRAHAM-BROWN | 11 | Leic Peng | 1:26.14 |
| 6 | 73 | Emma BREAG | 09 | Melton M'bry | 1:26.45 |
| 7 | 70 | Sophie LANE | 12 | Leic Sharks | 1:27.11 |
| 8 | 68 | Eleanor TRAHEARN | 09 | Hinckley | 1:28.00 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 80 | Erin HARVEY | 06 | Loughborough | 1:24.63 |
| 2 | 87 | Isla PICKERING | 08 | Coalville | 1:22.93 |
| 3 | 95 | Holly GENT | 11 | Coalville | 1:19.71 |
| 4 | 101 | Charlotte BYRON | 08 | Melton M'bry | 1:15.62 |
| 5 | 98 | Francesca HARRISON | 09 | Braunstone | 1:17.87 |
| 6 | 91 | Chloe GENT | 10 | Coalville | 1:21.37 |
| 7 | 84 | Eloise ALLSAGER | 07 | Leic Peng | 1:24.01 |
| 8 | 77 | Emily HEWITT | 10 | Hinckley | 1:25.08 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 81 | Lucy SNAITH | 08 | Loughborough | 1:24.59 |
| 2 | 88 | Florrie MARRIOTT | 10 | Loughborough | 1:22.82 |
| 3 | 96 | Alice BALL | 97 | Market Har | 1:18.94 |
| 4 | 102 | Sophie STATHAM-GILL | 09 | Coalville | 1:12.90 |
| 5 | 99 | Kate ANDREWS | 08 | Braunstone | 1:17.64 |
| 6 | 92 | Roberta KYLE | 11 | Leic Sharks | 1:21.20 |
| 7 | 85 | Julia JOZWIAK | 08 | Leic Sharks | 1:23.71 |
| 8 | 78 | Milen MERRITT | 12 | Melton M'bry | 1:24.86 |
| Heat Number - 13 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 82 | Evie YOUNG | 10 | Market Har | 1:24.43 |
| 2 | 89 | Emma GRAHAM-BROWN | 09 | Leic Peng | 1:21.73 |
| 3 | 97 | Olivia FAUSTMANN | 11 | Leic Sharks | 1:18.88 |
| 4 | 103 | Niamh DUNBAR | 08 | Hinckley | 1:12.70 |
| 5 | 100 | Janie FINCH | 10 | Hinckley | 1:17.57 |
| 6 | 94 | Freya WINGFIELD-DOBBS | 06 | Leicester Ne | 1:19.98 |
| 7 | 86 | Isabelle WALCZAK | 08 | Leic Peng | 1:23.25 |
| 8 | 79 | Poppy MASON | 10 | Hinckley | 1:24.83 |