EVENT 103 Female 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Brooklyn Hale | 15 | S9 | Cockermouth | 1:15.10 |
| 4 | 3 | Siena Oxby | 18 | S14 | Winsford | 1:12.00 |
| 5 | 2 | Tylia Glynn | 19 | S14 | Knutsford | 1:14.54 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 5 | Lilly Broadfoot | 15 | | Ulverston | 1:09.21 |
| 3 | 7 | Hattie Lawson | 13 | | Winsford | 1:08.90 |
| 4 | 10 | Ellie Jackson | 14 | | Wirral Metro | 1:08.30 |
| 5 | 8 | Hannah Lee | 17 | | Wigan BEST | 1:08.60 |
| 6 | 6 | Grace Robinson | 18 | S14 | Co Manch Aq | 1:09.00 |
| 7 | 4 | Amelia Gerrard | 16 | | Co Liverpool | 1:09.23 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 12 | Yarah Ghazal | 14 | | Lancaster | 1:08.12 |
| 2 | 15 | Faith Fellows | 17 | | Southport | 1:07.80 |
| 3 | 17 | Weronika Rozwarska | 15 | | Co Manch Aq | 1:07.59 |
| 4 | 19 | Sophie Grindley | 20 | | Winsford | 1:07.22 |
| 5 | 18 | Ellie Woodcock | 14 | | Cockermouth | 1:07.52 |
| 6 | 16 | Camilla Holland | 14 | | Wigan BEST | 1:07.62 |
| 7 | 14 | Pippa Vegh | 16 | | Southport | 1:07.90 |
| 8 | 11 | Ruby Sims | 16 | | Stockport Mo | 1:08.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 23 | Sophia Sugden | 15 | | Co Manch Aq | 1:06.80 |
| 2 | 29 | Ellie Schofield | 15 | | Aquabears | 1:06.00 |
| 3 | 35 | Jessica McNiven | 16 | | Blackpool Aq | 1:04.75 |
| 4 | 41 | Zahra Davies | 19 | | Co Manch Aq | 1:02.90 |
| 5 | 38 | Henrietta Chick | 16 | | Winsford | 1:03.80 |
| 6 | 32 | Zoey Rogers | 15 | | Trafford Met | 1:05.50 |
| 7 | 26 | Libby Woods | 16 | | Wigan BEST | 1:06.41 |
| 8 | 20 | Ruby Sheehan | 18 | | Wigan BEST | 1:07.10 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 24 | Vivien Wilkinson | 14 | | Wirral Metro | 1:06.80 |
| 2 | 30 | Sophie Dowding | 18 | | Co Liverpool | 1:05.57 |
| 3 | 36 | Lauren Berry | 15 | | Wirral Metro | 1:04.70 |
| 4 | 42 | Naomi Parker | 19 | | Co Manch Aq | 1:02.20 |
| 5 | 39 | Jade Phiri | 19 | | Co Manch Aq | 1:03.57 |
| 6 | 33 | Letian Wu | 16 | | Trafford Met | 1:05.10 |
| 7 | 27 | Allanah Donlan | 14 | | Warrington W | 1:06.20 |
| 8 | 21 | Hermione Coakley-Hines | 15 | | Wirral Metro | 1:07.08 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 25 | Emily Wade | 17 | | Leyland Barr | 1:06.43 |
| 2 | 31 | Viyana Seifi | 14 | | Co Salford | 1:05.54 |
| 3 | 37 | Evie Cutter | 16 | | Wigan BEST | 1:04.60 |
| 4 | 43 | Jessica Calderbank | 28 | | Co Manch Aq | 59.40 |
| 5 | 40 | Honor Luckhurst | 16 | | Preston | 1:02.90 |
| 6 | 34 | Eve Horton | 19 | | Wigan BEST | 1:04.80 |
| 7 | 28 | Elizabeth Adam | 15 | | Leyland Barr | 1:06.15 |
| 8 | 22 | Annabelle Chan | 15 | | Winsford | 1:07.00 |