EVENT 303 Womens Open 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 2 | Alina Brenz | 14 | Meininger SV | 1:07.90 |
| 3 | 4 | Jessica Hardingham | 14 | Co Newcastle | 1:07.72 |
| 4 | 6 | Tegan Drew | 13 | Plymouth Lea | 1:07.41 |
| 5 | 5 | Bethany Newton | 14 | TauntonDeane | 1:07.70 |
| 6 | 3 | Julia Becker | 14 | Berliner TSC | 1:07.83 |
| 7 | 1 | Hannah Kelsall | 14 | Co Liverpool | 1:07.92 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 8 | Laura Stephens | 14 | Colchester | 1:06.65 |
| 1 | 10 | Eleanor Baldwin | 14 | Co Derby | 1:06.34 |
| 2 | 12 | Rebecca Sherwin | 13 | teamipswich | 1:05.78 |
| 3 | 14 | Danielle Baker | 15 | Plymouth Lea | 1:04.95 |
| 4 | 16 | Brittany Horton | 15 | Co Birm'ham | 1:04.87 |
| 5 | 15 | Shauntelle Austin | 16 | Blackpool Aq | 1:04.93 |
| 6 | 13 | Ella Bowkley | 16 | Co Birm'ham | 1:05.05 |
| 7 | 11 | Kiani Campbell-Grady | 14 | Co Leeds | 1:05.80 |
| 8 | 9 | Cara Hetherington | 14 | teamipswich | 1:06.34 |
| 9 | 7 | Hannah Jones | 14 | Stockport Mo | 1:06.82 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 20 | Eliza Duffy | 16 | Chelmsford | 1:04.57 |
| 1 | 26 | Lucy Hope | 16 | B.E.S.T. | 1:03.77 |
| 2 | 32 | Harriet Cooper | 16 | Co Leicester | 1:03.44 |
| 3 | 38 | Femke Heemskerk | 26 | NED | 1:01.84 |
| 4 | 44 | Lauren Quigley | 18 | Hazel Grove | 1:00.50 |
| 5 | 41 | Jessica Fullalove | 17 | Co Manch Aq | 1:01.17 |
| 6 | 35 | Karley Mann | 19 | Hillingdon | 1:02.53 |
| 7 | 29 | Grace Vertigans | 17 | Plymouth Lea | 1:03.53 |
| 8 | 23 | Charlotte Bryan | 19 | Swansea Uni | 1:04.15 |
| 9 | 17 | Rebecca Jones | 16 | Co Derby | 1:04.81 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 21 | Emma Smith | 17 | Co Birm'ham | 1:04.54 |
| 1 | 27 | Rebecca Cole | 19 | Co Birm'ham | 1:03.76 |
| 2 | 33 | Kathleen Dawson | 16 | Warrington W | 1:03.37 |
| 3 | 39 | Georgia Hohmann | 19 | Loughboro Un | 1:01.65 |
| 4 | 45 | Georgia Davies | 23 | Swansea Uni | 59.92 |
| 5 | 42 | Ekaterina Avramova | 22 | Ealing | 1:01.11 |
| 6 | 36 | Charlotte McKenzie | 17 | F.I.R.S.T. | 1:02.34 |
| 7 | 30 | Phoebe Lenderyou | 18 | Plymouth Lea | 1:03.48 |
| 8 | 24 | Ruta Meilutyte | 16 | Plymouth Lea | 1:04.15 |
| 9 | 18 | Josephine Blades | 16 | St Felix Sch | 1:04.80 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 22 | Kirsty Simpson | 17 | Dun City Aqu | 1:04.52 |
| 1 | 28 | Kathryn Willis | 21 | Loughboro Un | 1:03.61 |
| 2 | 34 | Hazel Sarikaya | 17 | Plymouth Lea | 1:02.67 |
| 3 | 40 | Kira Toussaint | 19 | NED | 1:01.28 |
| 4 | 46 | Elizabeth Simmonds | 22 | Bath Univ | 59.89 |
| 5 | 43 | Sharon Van Rouwendaal | 20 | NED | 1:00.61 |
| 6 | 37 | Natasha Hofton | 18 | Nova Cent'n | 1:02.02 |
| 7 | 31 | Rachel Williams | 20 | Bath Univ | 1:03.47 |
| 8 | 25 | Katie Latham | 16 | Thanet Swim | 1:03.93 |
| 9 | 19 | Sophie Pyatt | 18 | Stockport Mo | 1:04.57 |