EVENT 402 Girl Open 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Skye HOLMES | 12 | Louth | 3:28.95 |
| 2 | 3 | Emilija IVANOVA | 13 | Boston | 3:21.90 |
| 3 | 5 | Rianna ABBOTT | 14 | Grantham | 3:19.57 |
| 4 | 7 | Isobel MANNING | 14 | Boston | 3:12.70 |
| 5 | 6 | K GREENWOOD-COVELL | 14 | Deepings | 3:17.34 |
| 6 | 4 | Sophie COOKSEY | 12 | Louth | 3:21.63 |
| 7 | 2 | Lexie HAMILTON | 13 | South Lincs | 3:27.55 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Olivia SPENCER | 16 | Lincoln Vulc | 3:11.89 |
| 2 | 11 | Sophie MARSHALL | 17 | Lincoln Vulc | 3:05.21 |
| 3 | 13 | Libby BUNN | 14 | Boston | 3:03.90 |
| 4 | 15 | Katie ROSCOE | 19 | Louth | 2:59.09 |
| 5 | 14 | Grace TWILTON | 14 | Lincoln Vulc | 3:01.55 |
| 6 | 12 | Lillie HAMILTON | 14 | South Lincs | 3:04.15 |
| 7 | 10 | Florrie HENSMAN | 13 | Louth | 3:06.08 |
| 8 | 8 | Sophie WILSON | 14 | South Lincs | 3:12.56 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Lucie LUND | 15 | South Lincs | 2:49.85 |
| 2 | 19 | Molly BRIERS | 16 | Deepings | 2:47.99 |
| 3 | 21 | Olivia ANSTEY | 14 | Louth | 2:45.98 |
| 4 | 23 | Sadie HUNTER | 14 | Deepings | 2:40.02 |
| 5 | 22 | Anya STRICKLAND | 16 | South Lincs | 2:40.69 |
| 6 | 20 | Evelyn JACKSON | 14 | Lincoln Vulc | 2:47.39 |
| 7 | 18 | Daniela BRINGEMAN | 15 | South Lincs | 2:48.85 |
| 8 | 16 | Emilia THORNLEY-PAYNE | 14 | Boston | 2:51.85 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Katie FOUNDS | 16 | Co Lincoln P | 2:36.12 |
| 2 | 27 | Chloe HOPKINSON | 17 | Grantham | 2:31.44 |
| 3 | 29 | Katie MALONEY | 25 | Lincoln Vulc | 2:27.65 |
| 4 | 31 | Ellisha COOKSON | 18 | South Lincs | 2:26.84 |
| 5 | 30 | Mollie BRIGGS | 17 | South Lincs | 2:27.07 |
| 6 | 28 | Grace TURNER | 15 | Grantham | 2:29.78 |
| 7 | 26 | Evie TURNER | 16 | Grantham | 2:34.15 |
| 8 | 24 | Francesca HALLAM-STOTT | 15 | Grantham | 2:38.45 |