| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Jessica O'HERLIHY | 18 | South Lincs | 1:03.01 |
| 1 | 2 | Erin INGHAM | 16 | Louth | 1:02.79 |
| 2 | 3 | Chloe MACDONALD | 16 | York City | 1:02.48 |
| 3 | 4 | Ivy HERNANDEZ TAYLOR | 15 | Hackney | 1:02.31 |
| 4 | 5 | Poppy DUNNE | 16 | Skipton | 1:01.73 |
| 5 | 6 | Ruby GAMBLES | 16 | Rotherham Mo | 1:02.29 |
| 6 | 7 | Aimee COY | 16 | Co Liverpool | 1:02.45 |
| 7 | 8 | Kate ROBERTS | 15 | Co Liverpool | 1:02.67 |
| 8 | 9 | Hannah MORRIS | 17 | Wigan BEST | 1:02.80 |
| 9 | 10 | V PINERA LEVITA | 15 | Co Leeds | 1:03.44 |