EVENT 103 Girls 08/12 Yrs 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Aya HOSHEH | 10 | Kirkstall 8 | |
| 1 | 3 | Kadie WATERSTON | 8 | Scott Hall 8 | 1:21.36 |
| 2 | 5 | Purdy ROBERTS | 9 | Morley 8 | 1:19.63 |
| 3 | 7 | Mallerie SAMUEL | 9 | Kirkstall 8 | 1:19.00 |
| 4 | 9 | Kristina BATEY | 10 | Scott Hall | 1:13.71 |
| 5 | 8 | Charlotte MORETON | 9 | Kirkstall 8 | 1:15.00 |
| 6 | 6 | Olivia PAINE | 8 | Kirkstall 8 | 1:19.00 |
| 7 | 4 | Willow HICKMAN | 10 | Morley 8 | 1:20.66 |
| 8 | 2 | Sophie WHITAKER | 8 | Airborough 8 | 1:29.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Lottie MASSAM | 9 | Co Leeds | 1:10.10 |
| 1 | 13 | Anna SCHLOSSHAN | 8 | Co Leeds | 1:08.00 |
| 2 | 15 | Lauren THORN | 8 | Co Leeds | 1:06.44 |
| 3 | 17 | Millie THRELFALL | 8 | Airborough 8 | 1:06.00 |
| 4 | 19 | Aimee MARTISON-SMITH | 10 | John Smeaton | 1:05.26 |
| 5 | 18 | Maggie TRAN | 10 | Scott Hall 8 | 1:05.38 |
| 6 | 16 | Sophie RAMSHAW | 8 | Scott Hall 8 | 1:06.23 |
| 7 | 14 | Gurneet SAGOO | 11 | Co Leeds | 1:06.78 |
| 8 | 12 | Charlotte SPENCER | 8 | Morley 8 | 1:08.74 |
| 9 | 10 | Elizabeth-Jane HERSIC | 9 | Kirkstall 8 | 1:11.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 21 | Jasmine SHAY | 9 | Co Leeds | 1:05.00 |
| 1 | 23 | Lexi ENGLAND | 8 | Co Leeds | 1:05.00 |
| 2 | 25 | Ruby ELLIS | 9 | Co Leeds | 1:00.67 |
| 3 | 27 | Isobel HUGHES | 10 | Pudsey 8 | 1:00.18 |
| 4 | 29 | Evie MCKENNA | 9 | Morley 8 | 59.61 |
| 5 | 28 | Lilly GREENWOOD | 10 | Morley 8 | 59.80 |
| 6 | 26 | Ava PROCTOR | 9 | Co Leeds | 1:00.38 |
| 7 | 24 | Jasmine HIBBERT | 10 | John Smeaton | 1:02.14 |
| 8 | 22 | Molly SWINDLEHURST | 9 | Kirkstall 8 | 1:05.00 |
| 9 | 20 | Isabelle WOOD | 10 | Scott Hall 8 | 1:05.16 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 31 | Eva HEWER | 9 | Co Leeds | 58.00 |
| 1 | 33 | Evie INGRAM | 9 | Co Leeds | 57.68 |
| 2 | 35 | Alexandra WILSON | 10 | Co Leeds | 56.88 |
| 3 | 37 | Hazel BLAIN | 8 | Co Leeds | 54.12 |
| 4 | 39 | Grace BALLANCE | 10 | Airborough 8 | 52.85 |
| 5 | 38 | Ella PHILLIPS | 10 | Co Leeds | 54.08 |
| 6 | 36 | Isobella MEDIRATTA | 9 | Co Leeds | 56.48 |
| 7 | 34 | Amelie ANDREASEN | 9 | Co Leeds | 57.20 |
| 8 | 32 | Matilda TRICKLEBANK | 9 | Co Leeds | 57.92 |
| 9 | 30 | Isla LAKE | 10 | Airborough 8 | 58.73 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 41 | Alex NEWTON | 9 | Co Leeds | 52.05 |
| 1 | 43 | Morgan TALBOT | 9 | Co Leeds | 51.81 |
| 2 | 45 | Ria TULIAO | 10 | Scott Hall 8 | 51.33 |
| 3 | 47 | Aki ROBINSON | 10 | Co Leeds | 49.99 |
| 4 | 49 | Abigail BAIDEN | 10 | Co Leeds | 49.00 |
| 5 | 48 | Maisie WRIGHT | 9 | Co Leeds | 49.82 |
| 6 | 46 | Darcey CROSSLEY | 9 | Co Leeds | 50.84 |
| 7 | 44 | Rose LEVER | 10 | Co Leeds | 51.68 |
| 8 | 42 | Chloe MALONEY | 8 | Co Leeds | 51.85 |
| 9 | 40 | Phoebe HIRST | 10 | Co Leeds | 52.70 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 51 | Lucia DUNHILL | 9 | Co Leeds | 47.58 |
| 1 | 53 | Maddison CARTER | 10 | Co Leeds | 47.22 |
| 2 | 55 | Amelia MCDONNELL | 10 | Co Leeds | 46.48 |
| 3 | 57 | Alice UNDERWOOD | 10 | Co Leeds | 45.21 |
| 4 | 59 | Meryl FRAZER | 12 | Airborough 8 | 44.14 |
| 5 | 58 | Evangeline STACEY | 10 | Co Leeds | 44.93 |
| 6 | 56 | Abigail HALLAM | 10 | Co Leeds | 46.43 |
| 7 | 54 | Keira HINCHLIFFE | 10 | Pudsey 8 | 46.75 |
| 8 | 52 | Caitlin CHILD | 10 | Airborough 8 | 47.50 |
| 9 | 50 | Izabella HUMPHREYS-LEA | 10 | Co Leeds | 48.71 |