EVENT 303 Womens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 1 | Maya Brisco | 15 | S9 | Staines | 1:50.23 |
| 4 | 3 | Rebecca Franks | 18 | S9 | Gainsborough | 1:44.23 |
| 5 | 2 | Porsha Jones | 13 | S10 | Shrewsbury | 1:49.46 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 6 | Hayley Milne | 16 | S8 | Grantham | 1:39.42 |
| 1 | 12 | Anita Osk Hrafnsdottir | 21 | S14 | Iceland | 1:24.17 |
| 2 | 18 | Emely Telle | 18 | S12 | Germany | 1:18.41 |
| 3 | 24 | Nuria Marques Soto | 16 | S9 | Spain | 1:14.13 |
| 4 | 30 | Gemma Almond | 22 | S10 | Swansea Uni | 1:11.04 |
| 5 | 27 | Ellen Keane | 20 | S9 | Ireland | 1:12.35 |
| 6 | 21 | Lina Watz | 19 | S10 | Sweden | 1:16.99 |
| 7 | 15 | Jay McCabe | 13 | S9 | Darlington | 1:22.08 |
| 8 | 9 | Kirsten Pinson | 17 | S10 | Sherwood | 1:30.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 7 | Adele Maguire | 14 | S8 | Warrington W | 1:35.62 |
| 1 | 13 | Maja Reichard | 24 | S11 | Sweden | 1:23.23 |
| 2 | 19 | Katarina Roxon | 22 | S9 | Canada | 1:17.30 |
| 3 | 25 | Chloe Buck | 18 | S9 | Harrogate | 1:13.68 |
| 4 | 31 | Alice Tai | 16 | S10 | Bourmth Coll | 1:10.34 |
| 5 | 28 | Stephanie Millward | 34 | S9 | Aquae Sulis | 1:12.17 |
| 6 | 22 | Claire Cashmore | 27 | S9 | Wyre Forest | 1:14.68 |
| 7 | 16 | Morgan Bird | 22 | S8 | Canada | 1:21.20 |
| 8 | 10 | Coral Farrell | 14 | S10 | Warrington W | 1:28.51 |
| 9 | 4 | Harriet Dickinson | 18 | S10 | Clevedon | 1:42.16 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 8 | Zara Mullooly | 13 | S10 | Woking | 1:32.42 |
| 1 | 14 | Megan Richter | 15 | S9 | Orion | 1:22.87 |
| 2 | 20 | Teresa Neves | 17 | S10 | Portugal | 1:17.24 |
| 3 | 26 | Tully Kearney | 18 | S9 | Boldmere | 1:13.46 |
| 4 | 32 | Sarai Gascon | 23 | S9 | Spain | 1:10.29 |
| 5 | 29 | Amy Marren | 17 | S9 | Romford Town | 1:11.09 |
| 6 | 23 | Pernilla Lindberg | 21 | S14 | Sweden | 1:14.66 |
| 7 | 17 | Emma Cattle | 27 | S10 | Team Luton | 1:19.71 |
| 8 | 11 | Eleanor Bamber | 19 | S10 | Glossop | 1:25.96 |
| 9 | 5 | Bethan Eckley | 15 | S10 | Co Cardiff | 1:40.36 |