| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Drew Nelly MCKENZIE | 16 | Co Glasgow | 59.12 |
| 2 | 2 | Betsy WIZARD | 18 | Northampton | 58.51 |
| 3 | 3 | Georgia COATES | 22 | Bath Univ | 57.89 |
| 4 | 4 | Katie ROBERTSON | 20 | Edinburgh Un | 57.68 |
| 5 | 5 | Freya COLBERT | 17 | Nova Cent'n | 57.73 |
| 6 | 6 | Mia SLEVIN | 18 | Derventio | 58.04 |
| 7 | 7 | Honey OSRIN | 18 | Plymouth Lea | 58.96 |
| 8 | 8 | Maisie ELLIOTT | 18 | Plymouth Lea | 1:00.24 |