| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Mya Valencia | 11 | Hoddesdon | 1:21.02 |
| 2 | 2 | Elissa Neo | 12 | Linslade | 1:19.72 |
| 3 | 3 | Valeria Soldatihhina | 12 | West Norfolk | 1:16.70 |
| 4 | 4 | Betsie Saville | 12 | Canvey Isl | 1:14.11 |
| 5 | 5 | Olive Bailey | 12 | Colchester | 1:15.91 |
| 6 | 6 | Elizabeth Litvinenko | 12 | West Norfolk | 1:17.49 |
| 7 | 7 | Tilly Howells | 12 | Verulam | 1:20.37 |
| 8 | 8 | Mariella Thorne | 12 | Ware | 1:22.08 |