| Final | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Fern Sneddon | 18 | SB6 | GBR - RTWS | 1:50.85 |
| 2 | 2 | Lok Yi Dorothy Au | 17 | SB9 | HONG KONG | 1:32.32 |
| 3 | 3 | Eva French | 17 | SB9 | GBR - NUNM | 1:27.82 |
| 4 | 4 | Siena Oxby | 17 | SB14 | GBR - STMN | 1:20.69 |
| 5 | 5 | Aira Kinoshita | 18 | SB14 | JAPAN | 1:22.67 |
| 6 | 6 | Katie Cosgriffe | 18 | SB9 | CANADA | 1:31.29 |
| 7 | 7 | Meghan Willis | 17 | SB9 | GBR - TDOY | 1:32.61 |
| 8 | 8 | Tabea Nele Teschauer | 18 | SB7 | GERMANY | 1:54.53 |