| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Ruby BLACKMORE | 12 | Flitwick | 43.09 |
| 2 | 2 | Daniella NJAWAYA | 12 | Team Luton | 41.32 |
| 3 | 3 | Olivia NEWMAN-BARONIUS | 12 | Putteridge | 39.43 |
| 4 | 4 | Lucy BUCKINGHAM | 12 | Putteridge | 37.75 |
| 5 | 5 | Eleni ZORN | 12 | Modernian | 39.36 |
| 6 | 6 | Skye BUNYARD | 12 | Linslade | 41.21 |
| 7 | 7 | Ella STONE | 12 | Biggleswade | 42.31 |
| 8 | 8 | Emily HOLDEN | 12 | Leighton Buz | 43.38 |