EVENT 504 Womens MC 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 2 | Scarlett Humphrey | 12 | S12 | Northampton | 1:54.90 |
| 1 | 6 | Leah O'Connell | 15 | S7 | Camden Swiss | 1:51.88 |
| 2 | 10 | Madeleine Harris | 14 | S9 | Elmbridge | 1:38.05 |
| 3 | 14 | Maya Brisco | 17 | S9 | Staines | 1:28.82 |
| 4 | 18 | Megan Neave | 14 | S14 | Co Derby | 1:21.32 |
| 5 | 16 | Harriet Dickinson | 20 | S10 | Gloucester | 1:24.48 |
| 6 | 12 | Rebecca Franks | 20 | S9 | Newark | 1:36.67 |
| 7 | 8 | Isabel Dean | 13 | S10 | Leic Peng | 1:41.57 |
| 8 | 4 | Genevieve Hunter | 15 | S8 | Beachfield | 1:54.14 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 3 | Charlotte Hyde | 15 | S7 | Camden Swiss | 1:54.24 |
| 1 | 7 | Hollie Pinder | 15 | S9 | Donc Dartes | 1:46.44 |
| 2 | 11 | Olivia-Mae Cameron | 18 | S8 | Mt Kelly | 1:36.86 |
| 3 | 15 | Drew Stables | 15 | S10 | Cockermouth | 1:28.04 |
| 4 | 19 | Katie Crowhurst | 13 | S13 | Wycombe Dist | 1:18.64 |
| 5 | 17 | Coral Farrell | 16 | S10 | Warrington W | 1:22.22 |
| 6 | 13 | Tully Kearney | 20 | S7 | Co Manch Aq | 1:36.42 |
| 7 | 9 | Ella Cooper-Holmes | 17 | S7 | Cockermouth | 1:39.25 |
| 8 | 5 | Georgia Howell | 15 | S6 | Littleh'pton | 1:52.66 |
| 9 | 1 | Katie Moss | 16 | S6 | Mt Kelly | 1:59.49 |