EVENT 403 Female 15 Yrs/Over 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Isabella Andreou | 15 | S9 | Crewe Flyers | |
| 4 | 3 | Lhouraii Owens-McAloon | 16 | S14 | Stretford | |
| 5 | 2 | Amelia Cowburn | 17 | S8 | Blackpool Aq | 1:28.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 5 | Chiara Fellone | 19 | S14 | Flixton | 1:21.97 |
| 3 | 8 | Imogen Dinsdale | 15 | | Prescot | |
| 4 | 10 | Bella-Mai Fishwick | 15 | | Halton | |
| 5 | 9 | Mabel Wood | 15 | | Wirral Metro | 1:11.58 |
| 6 | 7 | Lottie Abbott Beck | 15 | | Wirral Metro | |
| 7 | 4 | Amy Choularton | 16 | S14 | Stockport Mo | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 13 | Carolyne Bennett | 15 | | Clitheroe | 1:11.71 |
| 2 | 15 | Ellie Woodcock | 15 | | Cockermouth | 1:12.45 |
| 3 | 17 | Holly Baker | 16 | | Bury & Elton | |
| 4 | 19 | Megan Templeton | 16 | | Co Liverpool | 1:11.89 |
| 5 | 18 | Vivien Wilkinson | 15 | | Wirral Metro | |
| 6 | 16 | Hannah Burns | 16 | | Altrincham | 1:12.74 |
| 7 | 14 | Olivia Knox | 15 | | Wigan BEST | |
| 8 | 11 | Alexis Aspin | 15 | | Preston | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 26 | Olivia Wilson | 16 | | Co Salford | 1:10.45 |
| 2 | 32 | Camilla Holland | 15 | | Wigan BEST | 1:08.49 |
| 3 | 39 | Jamie-Leigh Tyson | 20 | | Ulverston | 1:07.84 |
| 4 | 46 | Autum Claxton | 15 | | Stockport Mo | 1:11.50 |
| 5 | 42 | Emily Hall | 16 | | Warrington W | 1:10.02 |
| 6 | 36 | Yarah Ghazal | 15 | | Leyland Barr | 1:08.32 |
| 7 | 29 | Maisie Lloyd | 16 | | Wigan BEST | 1:10.18 |
| 8 | 20 | Chloe Cowsill | 16 | | Ulverston | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 27 | Scarlett Hutchinson-Th | 18 | | Bolton Metro | 1:10.75 |
| 2 | 33 | Iris Hurst | 16 | | Warrington W | 1:07.85 |
| 3 | 40 | Laila Lawrenson | 17 | | Preston | 1:08.62 |
| 4 | 47 | Elizabeth Curphey | 17 | | Io Man | 1:07.48 |
| 5 | 44 | Megan Ormiston | 16 | | Stockport Mo | 1:08.06 |
| 6 | 37 | Sophia Hewlett | 16 | | Bebington | 1:10.19 |
| 7 | 30 | Sophia Westhead | 15 | | Bolton Metro | 1:09.00 |
| 8 | 23 | Daisy Barlow | 16 | | Co Salford | 1:10.41 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 28 | Isabelle Carter | 16 | | Prescot | |
| 2 | 34 | Isabella Grimbaldeston | 16 | | Leyland Barr | 1:10.88 |
| 3 | 41 | Molly Brennan | 19 | | Winsford | 1:09.22 |
| 4 | 48 | Lily Horton | 18 | | Wirral Metro | 1:07.39 |
| 5 | 45 | Kate Roberts | 17 | | Co Liverpool | 1:09.64 |
| 6 | 38 | Daisy D'Arcy | 15 | | Co Liverpool | 1:09.41 |
| 7 | 31 | Henrietta Chick | 17 | | Winsford | 1:09.83 |
| 8 | 25 | Sophie Mitchell | 17 | | Preston | |