| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Alice DENNIS | 19 | Wisbech | 1:20.06 |
| 2 | 2 | Chloe BUTLER | 15 | St Ives | 1:17.25 |
| 3 | 3 | Zara KEEGAN | 17 | Co Cambridge | 1:17.10 |
| 4 | 4 | Kathryn GILL | 32 | Co Cambridge | 1:14.98 |
| 5 | 5 | Iona TRAINER | 16 | Co Peterboro | 1:16.65 |
| 6 | 6 | Natalie SANFORD | 15 | St Felix Sch | 1:17.20 |
| 7 | 7 | Lauren WATT | 18 | Co Cambridge | 1:18.38 |
| 8 | 8 | Kitty JARVIS | 16 | Harlow Pen | 1:24.19 |