EVENT 551 Womens Open 50m Backstroke - Semi Final
| Semi-Final - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 2 | Rachel Helm | 97 | Tynemouth | 30.64 |
| 2 | 3 | Kathryn Willis | 92 | Loughboro Un | 30.47 |
| 3 | 4 | Isabella Hindley | 96 | Chelsea&West | 29.85 |
| 4 | 5 | Jessica Fullalove | 96 | Co Manch Aq | 28.98 |
| 5 | 6 | Harriet Cooper | 97 | Co Leicester | 29.47 |
| 6 | 7 | Phoebe Lenderyou | 95 | Plymouth Lea | 30.36 |
| 7 | 8 | Danielle Stirrat | 93 | Co Cardiff | 30.13 |
| 8 | 9 | Harriet West | 97 | Co Leicester | 30.61 |
| Semi-Final - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 12 | Charlotte Reid | 95 | Hatfield | 30.68 |
| 2 | 13 | Josephine Blades | 97 | St Felix Sch | 30.47 |
| 3 | 14 | Charlotte McKenzie | 96 | F.I.R.S.T. | 29.91 |
| 4 | 15 | Lauren Quigley | 95 | Stockport Mo | 28.23 |
| 5 | 16 | Georgia Davies | 90 | Swansea Uni | 28.57 |
| 6 | 17 | Kirsty Simpson | 96 | Dun City Aqu | 30.46 |
| 7 | 18 | Karen Reid | 98 | Sth Ayrshire | 30.34 |
| 8 | 19 | Emily Grant | 97 | Co Aberdeen | 30.85 |