| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Mia PARAPIJONAVICIUTE. | 17 | Grantham | 1:25.74 |
| 2 | 2 | Casey CLEAVER | 20 | Co Lincoln P | 1:21.86 |
| 3 | 3 | Grace MACDONALD | 17 | Grantham | 1:18.10 |
| 4 | 4 | Olivia ANSTEY | 18 | Louth | 1:16.03 |
| 5 | 5 | Lilli-Rose CARR | 17 | Co Lincoln P | 1:18.04 |
| 6 | 6 | Hannah BRUCE | 17 | South Lincs | 1:21.19 |
| 7 | 7 | Megan LAMB | 17 | Lincoln Vulc | 1:25.08 |