| B Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Sholah Robinson | 06 | Co Sheffield | 5:00.53 |
| 2 | 2 | Abbie Roscoe | 09 | Wirral Metro | 4:59.64 |
| 3 | 3 | Holly Marshall | 06 | Repton | 4:58.15 |
| 4 | 4 | Matilda Potter | 08 | Co Leeds | 4:56.98 |
| 5 | 5 | Amalie Smith | 09 | RTW Monson | 4:57.66 |
| 6 | 6 | Katie Lee | 08 | Co Salford | 4:59.39 |
| 7 | 7 | Lydia Cordle | 10 | Repton | 4:59.69 |
| 8 | 8 | Ailsa McDonald | 01 | Edinburgh Un | 5:00.71 |