| Pos | Name | YOB | Club | Time | ||||
| 1 | Molly Davis | 95 | HARS | 47.95 | ||||
| 2 | Victoria Baulcomb | 95 | BBFS | 48.45 | ||||
| 3 | Elizabeth Neale | 96 | BBFS | 48.82 | ||||
| 4 | Holly Bunting | 95 | HARS | 48.91 | ||||
| 5 | Kira Mancktelow | 95 | HARS | 50.76 | ||||
| 6 | Charlotte Thomas | 95 | ALTS | 50.90 | ||||
| 7 | Hannah Hunter | 95 | HAQS | 52.77 | ||||
| 8 | Amy Day | 95 | BBFS | 52.89 | ||||
| 9 | Molly Augur | 95 | HAQS | 53.70 | ||||
| 10 | Laura Cullum | 95 | ALTS | 53.77 | ||||
| 11 | Zante Tolley | 95 | HARS | 54.70 | ||||
| 12 | Hannah Beauchamp | 95 | HARS | 54.73 | ||||
| 13 | Catherine Dodge | 95 | HARS | 55.74 | ||||
| 14 | Jessica Holloway | 95 | HAQS | 56.72 | ||||
| 15 | Gemma Cully | 95 | GOSS | 57.88 | ||||
| 16 | Carys Shears | 96 | HAQS | 58.03 | ||||
| 17 | Kayleigh Ryan | 96 | HAQS | 58.28 | ||||
| 18 | India Bosley | 96 | HAQS | 58.47 | ||||
| 19 | Charlotte Eales | 97 | HARS | 58.72 | ||||
| 20 | Amelia Hamilton | 96 | HARS | 58.82 | ||||
| 21 | Hannah Evans | 95 | BBFS | 58.90 | ||||
| 22 | Harriet Bryan | 95 | ALTS | 59.13 | ||||
| 23 | Amber Bernice | 96 | GOSS | 1:02.63 | ||||
| 24 | Megan Viais | 95 | GOSS | 1:03.28 | ||||
| 25 | Leanne Knight | 96 | GOSS | 1:03.54 | ||||
| 26 | Nadia Warren | 96 | HAQS | 1:04.34 | ||||
| 27 | Jessica Walker | 95 | GOSS | 1:08.52 | ||||
| Christy Chui | 96 | BBFS | DQ:1 hand touch at turn | |||||
| Courtney Dowling | 96 | GOSS | DQ:False start | |||||
| Olivia Pooley | 95 | HAQS | DQ:Front crawl at start | |||||
| Samantha Crebo | 95 | HAQS | DQ:2 strokes under water at start | |||||
| Charlotte Preston-Howes | 95 | BBFS | DQ:2 strokes under water at start |