EVENT 901 Women MC 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Lottie Ava FLATTERS | 12 | Deepings SC | 3:44.78 |
| 2 | 3 | Sophie WARD | 09 | Grantham SC | 3:02.15 |
| 3 | 5 | Harriet MCCORMACK | 09 | Grantham SC | 3:10.68 |
| 4 | 7 | Lexie HAMILTON | 09 | South Lincs Competitive SC | 3:02.90 |
| 5 | 6 | Isobel MANNING | 08 | Boston Amateur SC | 3:09.64 |
| 6 | 4 | Emilija IVANOVA | 09 | Boston Amateur SC | 3:02.91 |
| 7 | 2 | Ellena HOWITT | 11 | Grantham SC | 3:15.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 9 | Sophie MARSHALL | 05 | City of Linc Pentaqua SC | 2:56.07 |
| 2 | 11 | Maisie MATTHEWS | 11 | Louth Dolphins SC | 3:11.34 |
| 3 | 13 | Isabella MIDDLETON | 08 | Louth Dolphins SC | 3:13.89 |
| 4 | 15 | Skye HOLMES | 10 | Louth Dolphins SC | 3:01.27 |
| 5 | 14 | Emilia THORNLEY-PAYNE | 08 | Boston Amateur SC | 3:06.61 |
| 6 | 12 | Emilie WEBB | 10 | Grantham SC | 3:07.26 |
| 7 | 10 | Florrie HENSMAN | 09 | Louth Dolphins SC | DN:C . |
| 8 | 8 | Rianna ABBOTT | 08 | Grantham SC | 3:06.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 17 | Emily BRIGGS | 09 | South Lincs Competitive SC | 2:49.43 |
| 2 | 19 | Hannah BRUCE | 09 | South Lincs Competitive SC | 2:48.67 |
| 3 | 21 | Grace MACDONALD | 09 | Grantham SC | 2:38.71 |
| 4 | 23 | Olivia SPENCER | 06 | Lincoln Vulcans SC | 2:53.01 |
| 5 | 22 | Alexandra HALLAM-STOTT | 06 | Grantham SC | 2:47.74 |
| 6 | 20 | Libby BUNN | 08 | Boston Amateur SC | 2:56.51 |
| 7 | 18 | Helena FIELD | 09 | Louth Dolphins SC | 2:48.39 |
| 8 | 16 | Sophie COOKSEY | 10 | Louth Dolphins SC | 3:01.84 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 25 | Corey FARLEY | 09 | Grantham SC | 2:45.05 |
| 2 | 27 | Lillie HAMILTON | 08 | South Lincs Competitive SC | 2:40.98 |
| 3 | 29 | Samantha MACIJAUSKAITE | 05 | Boston Amateur SC | 2:41.47 |
| 4 | 31 | Evie DICKINSON | 08 | Louth Dolphins SC | 2:50.06 |
| 5 | 30 | Lilli-Rose CARR | 09 | City of Linc Pentaqua SC | 2:35.04 |
| 6 | 28 | Erin INGHAM | 08 | Louth Dolphins SC | 2:41.36 |
| 7 | 26 | Gracie-May COLE | 08 | City of Linc Pentaqua SC | 2:41.61 |
| 8 | 24 | Lucy WILSON | 10 | South Lincs Competitive SC | 2:47.82 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 33 | Francesca HALLAM-STOTT | 07 | Grantham SC | 2:34.13 |
| 2 | 35 | Chloe HOPKINSON | 05 | Grantham SC | 2:32.49 |
| 3 | 37 | Grace TURNER | 07 | Grantham SC | 2:28.40 |
| 4 | 39 | Katie MALONEY | 97 | Lincoln Vulcans SC | 2:21.34 |
| 5 | 38 | Mollie BRIGGS | 05 | South Lincs Competitive SC | 2:28.24 |
| 6 | 36 | Olivia ANSTEY | 08 | Louth Dolphins SC | 2:23.93 |
| 7 | 34 | Evelyn JACKSON | 08 | Lincoln Vulcans SC | 2:34.50 |
| 8 | 32 | Ruby WARING | 06 | Louth Dolphins SC | DN:C . |