EVENT 103 Female 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | A STANISZEWSKA-SCONTUS | 10 | Co Leeds | |
| 4 | 3 | Emelia SHEARER | 11 | Aire 8 | |
| 5 | 2 | Rubby KUMI-BARIMAH | 10 | JCCS 8 | |
| 6 | 74 | Isla REEHAL | 9 | JCCS 8 | 1::5.0. |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 5 | Caitlin DEWHIRST | 9 | Co Leeds | |
| 1 | 7 | Elin BEST | 10 | Fearnville 8 | |
| 2 | 9 | Sarah BENDIMERED | 12 | Kirkstall 8 | |
| 3 | 11 | Siyona SWAIN | 9 | Morley 8 | |
| 4 | 13 | Lyra HAMBLETON-FIELD | 9 | Rothwell 8 | 1:30.00 |
| 5 | 12 | Zahra JEEVA | 9 | Smeaton 8 | 1:48.00 |
| 6 | 10 | Diamond NONO YEPSIE | 11 | Kirkstall 8 | |
| 7 | 8 | Grace ZHOU | 9 | Co Leeds | |
| 8 | 6 | Daisy RASOOL | 9 | Co Leeds | |
| 9 | 4 | Clara BEST | 10 | Fearnville 8 | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 15 | Jessica SUTCLIFFE | 9 | Co Leeds | 1:20.00 |
| 1 | 17 | Paige ROBERTSON | 8 | Co Leeds | 1:20.00 |
| 2 | 19 | Ella SLATER | 9 | JCCS 8 | 1:20.00 |
| 3 | 21 | Eva SPAMPINATO | 9 | Smeaton 8 | 1:14.15 |
| 4 | 23 | Georgia CASSON | 10 | Aire 8 | 1:11.00 |
| 5 | 22 | Holly BROWN | 9 | Co Leeds | 1:13.14 |
| 6 | 20 | Imogen KNOTT | 11 | Fearnville 8 | 1:15.58 |
| 7 | 18 | Sophia Xiu Hui KOK | 10 | Co Leeds | 1:20.00 |
| 8 | 16 | Agnes JOYCE | 11 | Kirkstall 8 | 1:20.00 |
| 9 | 14 | Freya READ | 8 | Co Leeds | 1:20.01 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 25 | Rosamund TAN | 10 | Co Leeds | 1:09.58 |
| 1 | 27 | Isabella MEYER | 10 | Scott Hall 8 | 1:09.00 |
| 2 | 29 | Stella BOWES | 8 | Co Leeds | 1:07.00 |
| 3 | 31 | Millie NEALE | 9 | Co Leeds | 1:06.00 |
| 4 | 33 | Evelyn PACE | 9 | Scott Hall 8 | 1:05.78 |
| 5 | 32 | G KOLACZ APPLEYARD | 12 | Fearnville 8 | 1:05.88 |
| 6 | 30 | Jemima PAPP | 9 | Aire 8 | 1:06.58 |
| 7 | 28 | Millie WATERHOUSE | 11 | Kirkstall 8 | 1:07.30 |
| 8 | 26 | Aria BARKER | 11 | Holt Park 8 | 1:09.09 |
| 9 | 24 | Niamh ARCHBOLD | 10 | Kirkstall 8 | 1:10.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 35 | Quinn ROBERTSON | 10 | Co Leeds | 1:04.78 |
| 1 | 37 | Amy FIELDS | 11 | Fearnville 8 | 1:04.00 |
| 2 | 39 | Rosemary DUNNIGAN | 10 | Scott Hall 8 | 1:03.83 |
| 3 | 41 | E PERULERO DRIEHAUS | 10 | Kirkstall 8 | 1:03.00 |
| 4 | 43 | Dora WALMSLEY | 11 | Scott Hall 8 | 1:01.37 |
| 5 | 42 | Onadi GUNARATHNE | 9 | Co Leeds | 1:01.67 |
| 6 | 40 | Lily-Rose TURNER | 10 | Rothwell 8 | 1:03.53 |
| 7 | 38 | Gracie HART | 9 | Co Leeds | 1:04.00 |
| 8 | 36 | Harper ELLIS | 9 | Co Leeds | 1:04.08 |
| 9 | 34 | Heisi MACKINTOSH | 12 | Rothwell 8 | 1:05.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 45 | Annabelle FENTON | 11 | Rothwell 8 | 1:00.63 |
| 1 | 47 | Anneliese CIRSTEA | 10 | Co Leeds | 1:00.00 |
| 2 | 49 | Faith BRAYSHAW | 11 | Aire 8 | 58.95 |
| 3 | 51 | C ROBERTS-SMITH | 9 | Co Leeds | 57.88 |
| 4 | 53 | Isabelle WADE | 12 | Pudsey 8 | 56.90 |
| 5 | 52 | Sophie LEWIS | 10 | Co Leeds | 56.91 |
| 6 | 50 | Anya CLARKE | 11 | Fearnville 8 | 58.15 |
| 7 | 48 | Lucy HOLLOWAY | 9 | Co Leeds | 59.42 |
| 8 | 46 | Matilda SHERLEY-PRICE | 9 | Co Leeds | 1:00.00 |
| 9 | 44 | Sophie PATTERSON | 9 | Co Leeds | 1:01.07 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 55 | Evie CANNING | 11 | Scott Hall 8 | 56.39 |
| 1 | 57 | Gabriella PIORO | 12 | Scott Hall 8 | 56.15 |
| 2 | 59 | Elizabeth ROTHWELL | 10 | Co Leeds | 55.70 |
| 3 | 61 | Annabelle ALLSHORN | 12 | Holt Park 8 | 53.60 |
| 4 | 63 | Emma GLOSEK | 10 | Co Leeds | 52.30 |
| 5 | 62 | Sienna XU | 12 | Fearnville 8 | 53.12 |
| 6 | 60 | G ROBERTS-SMITH | 10 | Co Leeds | 53.75 |
| 7 | 58 | Lola MALCOLM | 8 | Co Leeds | 55.79 |
| 8 | 56 | Matilda PENNELLS | 9 | Co Leeds | 56.17 |
| 9 | 54 | Ferne DYSON | 10 | Co Leeds | 56.50 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 65 | Evie MORAN | 11 | Co Leeds | 49.56 |
| 1 | 67 | Ayla CARRY | 11 | Co Leeds | 49.20 |
| 2 | 69 | Annabeth LOU-DAVEY | 11 | Holt Park 8 | 47.14 |
| 3 | 71 | Anna GLOSEK | 12 | Co Leeds | 44.80 |
| 4 | 73 | Honey CLARK | 12 | Co Leeds | 42.11 |
| 5 | 72 | Ella HARRISON | 11 | Co Leeds | 43.50 |
| 6 | 70 | Zoe WRIGHT | 11 | Co Leeds | 46.00 |
| 7 | 68 | Erin HARGREAVES | 11 | Co Leeds | 47.70 |
| 8 | 66 | Aoife DEWHIRST | 11 | Co Leeds | 49.50 |
| 9 | 64 | Leah MACDONALD | 10 | Co Leeds | 50.54 |