| Final | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 1 | 2 | Ida Corcoran | 09 | SB9 | Flitwick | 1:02.54 |
| 2 | 3 | Katie Pake | 08 | SB9 | Carnegie | 51.53 |
| 3 | 4 | Ela Letton-Jones | 06 | SB13 | Swim Gwynedd | 47.60 |
| 4 | 5 | Iona Winnifrith | 11 | SB6 | Tonbridge | 48.71 |
| 5 | 6 | Astrid Carroll | 09 | SB13 | Bo Kirklees | 41.48 |
| 6 | 7 | Merryn Binnie | 09 | SB6 | Swim-IT | 1:03.85 |
| 7 | 8 | Joy McLoughlin | 08 | SB7 | NE Dis SC | 1:15.78 |