| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Ellie LEWIS | 17 | Beckenham | 1:09.26 |
| 1 | 2 | Lan LE | 18 | Bexley | 1:08.81 |
| 2 | 3 | Amelia TOVEY | 18 | Sevenoaks | 1:08.24 |
| 3 | 4 | Maisie CHAMBERS | 18 | Sevenoaks | 1:06.39 |
| 4 | 5 | Annabel SMITH | 22 | Bromley | 1:03.42 |
| 5 | 6 | I NIGHTINGALE-ELLIS | 17 | RTW Monson | 1:04.97 |
| 6 | 7 | Emilia OLIVER | 17 | RTW Monson | 1:07.60 |
| 7 | 8 | Ivy HAGGERTY | 17 | Thanet Swim | 1:08.51 |
| 8 | 9 | Lyanna GORE | 18 | Larkfield | 1:09.04 |
| 9 | 10 | Ruby WALLER | 17 | Maidstone SC | 1:09.67 |