| Pos | Name | YOB | Club | Time | ||||
| 1 | Megan White | 94 | GODS | 46.08 | ||||
| 2 | Megan Randles | 94 | RURS | 46.53 | ||||
| 3 | Alexandra Votier | 95 | TEDS | 46.92 | ||||
| 4 | Megan Cassidy | 94 | HVWS | 46.98 | ||||
| 5 | Samantha McCabe | 94 | HAWS | 47.44 | ||||
| 6 | Rebecca Lee | 94 | BBFS | 50.66 | ||||
| 7 | Lauren Waldram | 94 | BBFS | 51.33 | ||||
| 8 | Victoria Baulcomb | 95 | BBFS | 52.60 | ||||
| 9 | Harriet Bryan | 95 | RURS | 52.67 | ||||
| 10 | Elizabeth Neale | 96 | BBFS | 52.75 | ||||
| 11 | Emma Craft | 95 | HAWS | 52.83 | ||||
| 12 | Kira Mancktelow | 95 | HARS | 53.71 | ||||
| 13 | Sofia Quisbert | 95 | HAWS | 54.14 | ||||
| 14 | Siobhan Harrison | 95 | BBFS | 56.02 | ||||
| 15 | Olivia Kerigan | 95 | TEDS | 56.36 | ||||
| 16 | Samantha Ardern | 95 | BBFS | 57.51 | ||||
| 17 | Aine Duffy | 94 | TEDS | 59.91 | ||||
| 18 | Amy McRobbie | 94 | GOSS | 1:01.23 | ||||
| 19 | Alice Harper | 94 | TEDS | 1:01.30 | ||||
| 20 | Nina Harding | 95 | TEDS | 1:01.32 | ||||
| 21 | Georgia Rowe | 94 | GOSS | 1:01.91 | ||||
| 22 | Miriam Morrison | 95 | BBFS | 1:04.36 | ||||
| Gemma Wilson | 94 | BBFS | DQ:Alternating leg kick | |||||
| Ellen Collas | 96 | HAWS | DQ:Alternating arns | |||||
| Aimee Ballantyne | 95 | GOSS | DQ:Arms not recovering together over water | |||||
| Molly Tatchell | 94 | HARS | DQ:Arms pushed forward under water | |||||
| Laura Fenwick | 95 | WCPS | DQ:Alternating arms |