EVENT 303 Womens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 2 | Zara Mullooly | 02 | S10 | Woking | 1:48.08 |
| 1 | 4 | Rebecca Franks | 97 | S9 | Lincoln Vulc | 1:41.13 |
| 2 | 6 | Inge Belfor | 01 | S10 | Netherlands | 1:35.78 |
| 3 | 8 | Ffion Butler | 98 | S9 | Shrewsbury | 1:30.92 |
| 4 | 10 | Emely Telle | 97 | S12 | Germany | 1:25.42 |
| 5 | 9 | Eleanor Bamber | 96 | S10 | Glossop | 1:26.65 |
| 6 | 7 | Megan Richter | 00 | S9 | Swim WM | 1:35.13 |
| 7 | 5 | Coral Farrell | 01 | S10 | Warrington W | 1:41.07 |
| 8 | 3 | Adele Maguire | 01 | S8 | Warrington W | 1:41.57 |
| 9 | 1 | Emma Warrington | 80 | S14 | Croydon Amph | 1:50.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 14 | Manon Vermarien | 97 | S10 | Netherlands | 1:20.08 |
| 1 | 20 | Elizabeth Simpkin | 94 | S9 | Preston | 1:16.18 |
| 2 | 26 | Claire Cashmore | 88 | S9 | Wyre Forest | 1:12.80 |
| 3 | 32 | Carla Casals | 87 | S12 | Spain | 1:11.50 |
| 4 | 38 | Amy Marren | 98 | S9 | Romford Town | 1:10.07 |
| 5 | 35 | Sarai Gascon | 92 | S9 | Spain | 1:10.58 |
| 6 | 29 | Magda Toeters | 86 | S14 | Netherlands | 1:12.20 |
| 7 | 23 | Reagan Doig | 98 | S14 | Perth City | 1:15.09 |
| 8 | 17 | Janina Savelsberg | 98 | S14 | Germany | 1:18.17 |
| 9 | 11 | Letticia Martinez | 95 | S11 | USA | 1:24.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 15 | Elena Krawzow | 93 | S13 | Germany | 1:20.00 |
| 1 | 21 | Airi Ike | 98 | S10 | Japan | 1:15.50 |
| 2 | 27 | Maria Delgado Nadal | 97 | S12 | Spain | 1:12.42 |
| 3 | 33 | I Hernandez Santos | 95 | S10 | Spain | 1:11.39 |
| 4 | 39 | Eleni Papadopoulos | 92 | S10 | Co Manch Aq | 1:09.92 |
| 5 | 36 | Gemma Almond | 93 | S10 | Swansea Uni | 1:10.27 |
| 6 | 30 | Stephanie Millward | 81 | S9 | Aquae Sulis | 1:11.90 |
| 7 | 24 | Chantal Molenkamp | 90 | S10 | Netherlands | 1:14.26 |
| 8 | 18 | Chloe Buck | 97 | S9 | Harrogate | 1:17.15 |
| 9 | 12 | Anita Osk Hrafnsdottir | 94 | S14 | Iceland | 1:22.34 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 16 | Rosie Bancroft | 95 | S10 | Co Oxford | 1:19.88 |
| 1 | 22 | Cailin Currie | 98 | S13 | USA | 1:15.39 |
| 2 | 28 | Luca Sos | 01 | S10 | Hungary | 1:12.25 |
| 3 | 34 | Naomi Maike Schnittger | 94 | S12 | Germany | 1:11.16 |
| 4 | 40 | Hannah Russell | 96 | S12 | Kelly Coll | 1:09.42 |
| 5 | 37 | Stephanie Slater | 91 | S8 | Preston | 1:10.12 |
| 6 | 31 | Ellen Keane | 95 | S9 | Ireland | 1:11.55 |
| 7 | 25 | Elizabeth Smith | 96 | S9 | USA | 1:12.97 |
| 8 | 19 | Nicole Lough | 95 | S14 | Co Sund'land | 1:16.88 |
| 9 | 13 | Colleen Young | 98 | S13 | USA | 1:21.32 |