EVENT 207 Female 15 Yrs/Over 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Thea Salla | 15 | Formby SC | |
| 4 | 4 | Clara Spence | 16 | Carnforth | |
| 5 | 3 | Kate Roberts | 15 | Co Liverpool | |
| 6 | 1 | Eloise Walmsley | 15 | Clitheroe | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Jessica Ball | 16 | Prescot | |
| 2 | 8 | Avagrace Hodson | 16 | Wigan BEST | 31.50 |
| 3 | 10 | Afia Langley | 15 | Garston | |
| 4 | 12 | Kristen Beswick | 16 | Preston | |
| 5 | 11 | Erin Meath | 15 | Co Liverpool | |
| 6 | 9 | Jenna Cross | 18 | Preston | |
| 7 | 7 | Chloe Batty | 16 | Io Man | |
| 8 | 5 | Faith Fellows | 16 | Southport | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Chloe Aitken | 19 | N'wich Seals | |
| 2 | 18 | Payton Chesters | 16 | Co Liverpool | |
| 3 | 20 | Evie Blackburn | 16 | Knutsford | 30.89 |
| 4 | 22 | Danielle Brady | 18 | Leyland Barr | |
| 5 | 21 | Grace Wareing-Yeulett | 17 | Preston | |
| 6 | 19 | Bethany Howard-Hughes | 18 | Halton | |
| 7 | 16 | Lauren Cox | 15 | Alsager | |
| 8 | 14 | Maya Smith | 16 | Burnley BOBC | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Grace Ebbrell | 17 | Bebington | |
| 2 | 26 | Charlotte Middleton | 15 | Leyland Barr | |
| 3 | 28 | Anastasia Musat | 15 | Co Salford | |
| 4 | 29 | Hannah O'Brien | 17 | Leyland Barr | |
| 5 | 30 | Eden Mankee | 17 | Winsford | |
| 6 | 27 | Anna Fenwick | 16 | Satellite | |
| 7 | 25 | Ruby Sims | 15 | Stockport Mo | 30.60 |
| 8 | 23 | Harriet Rawlings | 16 | Southport | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Zara Mann | 16 | Preston | 30.91 |
| 2 | 34 | Emilia Leslie | 16 | Stockport Mo | 31.16 |
| 3 | 37 | Isobel Liptrot | 16 | Co Liverpool | 30.82 |
| 4 | 39 | Hannah Maher | 19 | Co Liverpool | 30.09 |
| 5 | 38 | Jessica McNiven | 15 | Blackpool Aq | 31.08 |
| 6 | 36 | Lily Smith | 19 | Ulverston | |
| 7 | 33 | Scarlett Robinson | 16 | Copeland | |
| 8 | 31 | Amelia Moss | 18 | Ramsbottom | |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 44 | Henrietta Chick | 15 | N'wich Seals | |
| 2 | 53 | Emily Wade | 16 | Leyland Barr | 30.17 |
| 3 | 59 | Amelia Osborne | 19 | Co Manch Aq | 29.98 |
| 4 | 65 | Lisa Barzaghi | 17 | Bolton Metro | 29.69 |
| 5 | 62 | Honor Luckhurst | 15 | Preston | 29.68 |
| 6 | 56 | Eliza Pinkstone | 19 | Stockport Mo | 28.48 |
| 7 | 49 | Lauren Cusick | 17 | Aquabears | 30.51 |
| 8 | 40 | Zara Comb | 16 | Satellite | 30.89 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 45 | Georgia Cowgill | 16 | Trafford Met | 30.51 |
| 2 | 54 | Lucia Lesti | 15 | Co Salford | 29.27 |
| 3 | 60 | Aleksandra Moskwa | 16 | Stockport Mo | 29.31 |
| 4 | 66 | Ella Williams | 20 | Preston | 29.57 |
| 5 | 63 | Mia Burslem | 18 | Co Liverpool | 29.09 |
| 6 | 57 | Lily O'Neill | 16 | Stockport Mo | 29.46 |
| 7 | 51 | Abbie Winstanley | 22 | Workington | |
| 8 | 41 | Natasha McDonnell | 18 | Wirral Metro | |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 47 | Evie Cutter | 15 | Wigan BEST | 30.74 |
| 2 | 55 | Ella Faulkner | 15 | Stockport Mo | 30.63 |
| 3 | 61 | Caitlin Maylor | 17 | Howe Bridge | 29.93 |
| 4 | 67 | Amy West | 20 | Stockport Mo | 29.47 |
| 5 | 64 | Sophie Traill | 17 | Stockport Mo | 29.00 |
| 6 | 58 | Hannah Morris | 17 | Wigan BEST | |
| 7 | 52 | Peiqi Wu | 15 | Stockport Mo | 31.16 |
| 8 | 42 | Olivia Edgar | 15 | Chorley Marl | 30.76 |