| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Pearl O'Brien | 16 | Stretford | 1:17.52 |
| 2 | 2 | Jasmine Rolle | 16 | Bolton Metro | 1:17.09 |
| 3 | 3 | Maisy Smith | 20 | Stockport Mo | 1:15.87 |
| 4 | 4 | Lily Horton | 17 | Wirral Metro | 1:15.63 |
| 5 | 5 | Elizabeth Adam | 15 | Leyland Barr | 1:15.66 |
| 6 | 6 | Zoe Neuwirt | 15 | Io Man | 1:16.50 |
| 7 | 7 | Eloise Perritt | 16 | Knutsford | 1:17.47 |
| 8 | 8 | Emily Wade | 17 | Leyland Barr | 1:17.56 |