EVENT 103 Girls 08/12 Yrs 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Holly HURST | 11 | Co Leeds | |
| 4 | 3 | Matilda BRAITHWAITE | 8 | Morley 8 | 1:56.91 |
| 5 | 2 | Gracie SCOLLEN | 10 | Morley 8 | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 4 | Emma CANTERO GUARDIOLA | 9 | Scott Hall 8 | 1:36.27 |
| 1 | 6 | Sophie LANCASHIRE | 10 | Kirkstall 8 | 1:28.00 |
| 2 | 8 | Miriam EFIMOVA | 9 | Morley 8 | 1:16.67 |
| 3 | 10 | Iris LYNCH | 9 | T.I.D | 1:15.00 |
| 4 | 12 | BETH WORNER | 8 | Morley 8 | 1:14.16 |
| 5 | 11 | Isabel RADBOURNE | 8 | Kirkstall 8 | 1:15.00 |
| 6 | 9 | Olivia DALLAS | 10 | Kirkstall 8 | 1:16.00 |
| 7 | 7 | Anna JAMES | 8 | John Smeaton | 1:23.45 |
| 8 | 5 | Yingze MAE | 8 | Scott Hall 8 | 1:30.12 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 14 | Jasmine GINEL | 11 | Morley 8 | 1:13.65 |
| 1 | 16 | Emma HIRD | 11 | Pudsey 8 | 1:11.05 |
| 2 | 18 | Ebony NORTON | 11 | Pudsey 8 | 1:10.00 |
| 3 | 20 | Olivia PAINE | 9 | Kirkstall 8 | 1:09.00 |
| 4 | 22 | Emma GRIFFITHS | 10 | T.I.D | 1:05.00 |
| 5 | 21 | Ava MESSENGER | 8 | Morley 8 | 1:05.97 |
| 6 | 19 | Maria TOBIN | 9 | Morley 8 | 1:09.26 |
| 7 | 17 | Emma KNOWLES | 10 | Co Leeds | 1:10.00 |
| 8 | 15 | Kadie WATERSTON | 9 | Scott Hall 8 | 1:11.35 |
| 9 | 13 | Gabby LEACH | 11 | Morley 8 | 1:13.97 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 24 | Jessica WOODS | 8 | Co Leeds | 1:04.00 |
| 1 | 26 | Skye FAGAN | 12 | Morley 8 | 1:01.12 |
| 2 | 28 | Freya COTTERILL | 9 | Co Leeds | 1:00.00 |
| 3 | 30 | Ava PROCTOR | 10 | Co Leeds | 57.93 |
| 4 | 32 | Ellie OXLEY-HOLMES | 11 | Pudsey 8 | 57.00 |
| 5 | 31 | Sophia BETTIS | 9 | Co Leeds | 57.65 |
| 6 | 29 | Alice ASHCROFT | 9 | Co Leeds | 59.56 |
| 7 | 27 | Matilda ASHCROFT | 10 | Co Leeds | 1:00.00 |
| 8 | 25 | Millie WALKER | 9 | Kirkstall 8 | 1:02.00 |
| 9 | 23 | Eloise ANDREASEN | 8 | Co Leeds | 1:04.23 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 34 | Isla LAKE | 11 | Airborough 8 | 55.71 |
| 1 | 36 | Mia STEEDEN | 10 | Co Leeds | 54.97 |
| 2 | 38 | Grace BALLANCE | 11 | Airborough 8 | 52.29 |
| 3 | 40 | Ellie AKHTAR | 9 | Co Leeds | 51.69 |
| 4 | 42 | Ruby ELLIS | 10 | Co Leeds | 50.22 |
| 5 | 41 | Lola ONEILL | 10 | Co Leeds | 51.37 |
| 6 | 39 | Millie THRELFALL | 9 | Co Leeds | 52.22 |
| 7 | 37 | Sophie RAMSHAW | 9 | Co Leeds NR | 52.76 |
| 8 | 35 | Charlotte CHAMBERS | 11 | Airborough 8 | 55.00 |
| 9 | 33 | Isabelle WOOD | 11 | Scott Hall 8 | 56.71 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 44 | Amelie ANDREASEN | 10 | Co Leeds | 49.59 |
| 1 | 46 | Michalina SZYMANSKA | 11 | Co Leeds | 49.38 |
| 2 | 48 | Elizabeth DIXON | 9 | Co Leeds | 48.64 |
| 3 | 50 | Rosie CARTER | 10 | Co Leeds | 46.26 |
| 4 | 52 | Rose LEVER | 11 | Co Leeds | 45.97 |
| 5 | 51 | Alex NEWTON | 10 | Co Leeds | 46.14 |
| 6 | 49 | Isobella MEDIRATTA | 10 | Co Leeds | 48.62 |
| 7 | 47 | Maggie TRAN | 11 | Scott Hall 8 | 48.82 |
| 8 | 45 | Lauren THORN | 9 | Co Leeds | 49.51 |
| 9 | 43 | Jasmine SHAY | 10 | Co Leeds | 50.17 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 54 | Valeria PINERA-LEVITA | 9 | Co Leeds | 45.56 |
| 1 | 56 | Lottie MASSAM | 10 | Co Leeds | 44.86 |
| 2 | 58 | Charlotte MORETON | 10 | Co Leeds | 44.70 |
| 3 | 60 | Maddison CARTER | 11 | Co Leeds | 42.40 |
| 4 | 62 | Evangeline STACEY | 11 | Co Leeds | 40.86 |
| 5 | 61 | Alice UNDERWOOD | 11 | Co Leeds | 41.70 |
| 6 | 59 | Morgan TALBOT | 10 | Co Leeds | 44.24 |
| 7 | 57 | Hazel BLAIN | 9 | Co Leeds | 44.84 |
| 8 | 55 | Abigail BAIDEN | 11 | Co Leeds | 45.08 |
| 9 | 53 | Izabella HUMPHREYS-LEA | 11 | Co Leeds | 45.85 |