EVENT 504 Womens Open 50m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 1 | Yasmin Brown | 99 | KingstonHull | 28.90 |
| 2 | 3 | Julia Becker | 99 | Berliner TSC | 29.44 |
| 3 | 5 | Emily Graham | 99 | Plymouth Lea | 27.97 |
| 4 | 7 | Lucie Street | 99 | Millfield | 28.15 |
| 5 | 6 | Imogen Clark | 99 | Derventio | 28.04 |
| 6 | 4 | Emma England | 00 | Plymouth Lea | 27.96 |
| 7 | 2 | Cara Layden | 99 | Kelly Coll | 28.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 9 | C Coxeter-Smith | 99 | Guildford Ct | 29.10 |
| 1 | 11 | Lilyella Craw-Seaman | 99 | Royal Wolv | 28.57 |
| 2 | 13 | Laura Stephens | 99 | Colchester | 27.96 |
| 3 | 15 | Darcy Deakin | 99 | Co Sheffield | 28.25 |
| 4 | 17 | Lucy Hope | 97 | B.E.S.T. | 26.98 |
| 5 | 16 | Miriam Jessett | 99 | Co Newcastle | 28.44 |
| 6 | 14 | Mia Hawkes | 99 | Enfield Sq | 27.93 |
| 7 | 12 | Rebecca Dalling | 99 | Swim Swansea | 28.69 |
| 8 | 10 | Charlotte George | 99 | Woking | 28.23 |
| 9 | 8 | Louise Barker | 99 | RichmondDale | 28.57 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 19 | Clare Fowlie | 97 | Millfield | 27.92 |
| 1 | 21 | Jessica Jackson | 97 | Hatfield | 27.32 |
| 2 | 23 | Linda Shaw | 97 | Co Leeds | 27.07 |
| 3 | 25 | Eloise Barber | 92 | Carnegie | 26.53 |
| 4 | 27 | Victoria Cunningham | 94 | Loughboro Un | 27.06 |
| 5 | 26 | Andrea Strachan | 92 | Edinburgh Un | 27.46 |
| 6 | 24 | Hannah Rogers | 93 | Loughboro Un | 27.02 |
| 7 | 22 | Kira Toussaint | 94 | NED | 27.22 |
| 8 | 20 | Siwan Thomas-Howells | 97 | Swim Swansea | DN:C . |
| 9 | 18 | Mari Davies | 98 | Caernarfon | 27.58 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 31 | Laura Vertigans | 94 | Loughboro Un | 27.53 |
| 1 | 37 | Mai Alland | 93 | Crawley | 27.32 |
| 2 | 43 | Lauren Quigley | 95 | Hazel Grove | 26.53 |
| 3 | 49 | Emma Wilkins | 91 | Loughboro Un | 25.88 |
| 4 | 55 | Jeanette Ottesen Gray | 87 | DEN | 25.81 |
| 5 | 52 | Ruta Meilutyte | 97 | Plymouth Lea | 26.06 |
| 6 | 46 | Tamara Van Vliet | 94 | NED | 26.34 |
| 7 | 40 | Elise Bouwens | 91 | NED | 26.07 |
| 8 | 34 | Caitlin McClatchey | 85 | Edinburgh Un | 26.70 |
| 9 | 28 | Avril Kiritschenko | 92 | Swansea Uni | 26.82 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 32 | Emily Barclay | 97 | Bolton Metro | 27.63 |
| 1 | 38 | Sian Harkin | 94 | Plymouth Lea | 27.01 |
| 2 | 44 | Maud Van Der Meer | 92 | NED | 26.22 |
| 3 | 50 | Jessica Lloyd | 95 | Co Manch Aq | 26.22 |
| 4 | 56 | Francesca Halsall | 90 | Loughboro Un | 25.51 |
| 5 | 53 | Grace Vertigans | 96 | Plymouth Lea | 26.48 |
| 6 | 47 | Natalie Coughlin | 82 | Cal Aquatics | 25.52 |
| 7 | 41 | Rebecca Guy | 92 | Co Manch Aq | 26.38 |
| 8 | 35 | Ekaterina Avramova | 91 | Ealing | 26.90 |
| 9 | 29 | Eva Gliozertye | 97 | Plymouth Lea | 26.73 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 33 | Lauren Averell | 95 | Milngavie &B | 27.26 |
| 1 | 39 | Ellen Thomas | 94 | Guildford Ct | 26.50 |
| 2 | 45 | Rebecca Turner | 92 | Co Sheffield | 26.74 |
| 3 | 51 | Femke Heemskerk | 87 | NED | 25.43 |
| 4 | 57 | Ranomi Kromowidjojo | 90 | NED | 25.18 |
| 5 | 54 | Amy Smith | 87 | Loughboro Un | 25.88 |
| 6 | 48 | Sophie Smith | 94 | Loughboro Un | 26.71 |
| 7 | 42 | Hannah McCarthy | 93 | Swansea Uni | 26.77 |
| 8 | 36 | Harriet Cooper | 97 | Co Leicester | 26.78 |
| 9 | 30 | Katie Latham | 97 | Thanet Swim | 26.68 |