| B Final | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 2 | Melina Metaxa-Mariatou | 99 | S5 | Greece | 1:17.28 |
| 2 | 3 | Meri-Maari Makinen | 92 | S7 | Finland | 57.65 |
| 3 | 4 | Brenda Tilk | 94 | S7 | Estonia | 50.02 |
| 4 | 5 | Megan Short | 98 | S7 | Satellite | 48.55 |
| 5 | 6 | Maisie Summers Newton | 02 | S6 | Wellingboro | 49.64 |
| 6 | 7 | Sara Josefine Hanssen | 95 | S6 | Norway | 50.13 |
| 7 | 8 | Megan Atkinson | 00 | S6 | Peterlee | 1:03.55 |