EVENT 404 Girl 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Grace Freary | 10 | Bolton Metro | 1:40.30 |
| 2 | 5 | Pollyanna Kershaw | 11 | Blackpool Aq | 1:28.75 |
| 3 | 7 | Sarah Pearson | 13 | Clitheroe | 1:25.90 |
| 4 | 9 | Georgia Cork | 12 | Bolton Metro | 1:25.20 |
| 5 | 8 | Lois Anderton | 12 | Stretford | 1:25.49 |
| 6 | 6 | Tilly Collins | 12 | Wigan BEST | 1:27.50 |
| 7 | 2 | Charlotte Peel | 11 | Winsford | 1:34.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Lyra Limbert | 12 | Stretford | 1:22.28 |
| 2 | 14 | Faith Wood | 13 | Fleetwood | 1:20.01 |
| 3 | 16 | Abby Minshall | 15 | Oldham Aqua | 1:19.02 |
| 4 | 18 | Bethan Roberts | 15 | Stretford | 1:18.75 |
| 5 | 17 | Olivia Edgar | 13 | Chorley Marl | 1:19.00 |
| 6 | 15 | Madeline Smith | 13 | Burnley BOBC | 1:19.56 |
| 7 | 13 | Maddison McFadden | 14 | Burnley BOBC | 1:20.47 |
| 8 | 11 | Millie Pickles | 13 | Burnley BOBC | 1:22.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Ava-Renee Blease | 15 | Co Salford | 1:17.61 |
| 2 | 22 | Olivia Harrison | 16 | Wigan BEST | 1:16.33 |
| 3 | 24 | Isabelle Lavender | 15 | Lancaster | 1:16.04 |
| 4 | 26 | Kristen Beswick | 14 | Fleetwood | 1:15.78 |
| 5 | 25 | Lily Duke | 13 | Stretford | 1:15.91 |
| 6 | 23 | Alexandra Prince | 15 | Blackpool Aq | 1:16.10 |
| 7 | 21 | Darcie Dixon | 13 | Ramsbottom | 1:17.00 |
| 8 | 19 | Lucia Day | 13 | Oldham Aqua | 1:17.83 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 28 | Faith Fellows | 14 | Southport | 1:15.50 |
| 2 | 30 | Rosemary Holding | 15 | Fleetwood | 1:15.25 |
| 3 | 32 | Avagrace Hodson | 13 | Wigan BEST | 1:15.00 |
| 4 | 34 | Sophie Whittles | 12 | Co Salford | 1:14.60 |
| 5 | 33 | Erin Hardy | 15 | Winsford | 1:14.67 |
| 6 | 31 | Ruby Thomas | 13 | Winsford | 1:15.17 |
| 7 | 29 | Harriet Rawlings | 14 | Southport | 1:15.30 |
| 8 | 27 | Evie Bell | 15 | Carlisle Aq | 1:15.73 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 36 | Jasmine Bullough-Teal | 14 | Burnley BOBC | 1:14.05 |
| 2 | 38 | Molly Figgins | 15 | Fleetwood | 1:13.77 |
| 3 | 40 | Amy Ainsworth | 15 | Blackburn | 1:12.87 |
| 4 | 42 | Daisy Lewis | 16 | Stretford | 1:11.59 |
| 5 | 41 | Charlotte Meade | 17 | Blackburn | 1:11.97 |
| 6 | 39 | Mia Wroe | 14 | Burnley BOBC | 1:13.57 |
| 7 | 37 | Eleanor Edwards | 15 | Burnley BOBC | 1:13.90 |
| 8 | 35 | Laura David Catarino | 12 | Oldham Aqua | 1:14.55 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 44 | Lucia Lesti | 12 | Co Salford | 1:10.00 |
| 2 | 46 | Georgia Cowgill | 13 | Trafford Met | 1:09.05 |
| 3 | 48 | Martha Smith | 20 | Clitheroe | 1:05.64 |
| 4 | 50 | Lucy Turner | 16 | Burnley BOBC | 1:03.58 |
| 5 | 49 | Hattie Varley | 16 | Burnley BOBC | 1:04.30 |
| 6 | 47 | Baylie Seery | 18 | Burnley BOBC | 1:07.90 |
| 7 | 45 | Lydia Dewhurst | 17 | Burnley BOBC | 1:09.56 |
| 8 | 43 | Amelia Moss | 15 | Burnley BOBC | 1:10.20 |