| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lilou SAEIJS | 17 | Bromley | 1:20.41 |
| 2 | 2 | Imogen STODDART | 17 | Sevenoaks | 1:17.70 |
| 3 | 3 | Eliza POWELL | 18 | Bromley | 1:15.98 |
| 4 | 4 | Maddison LAY | 18 | Thanet Swim | 1:15.04 |
| 5 | 5 | Lily JEWELL | 20 | Thanet Swim | 1:15.18 |
| 6 | 6 | Isobella ADAMS-HOWARD | 19 | Beckenham | 1:16.89 |
| 7 | 7 | Holly GEAKE | 17 | Tonbridge | 1:20.25 |
| 8 | 8 | Samantha JACKSON | 17 | Orpington OJ | 1:22.27 |