EVENT 403 Womens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 1 | Eliza Humphrey | 05 | S11 | NHNA - GBR | 1:53.45 |
| 2 | 2 | Meghan Willis | 07 | S9 | Torfaen D | 1:43.98 |
| 3 | 3 | Rebecca Franks | 97 | S9 | VULA - GBR | 1:42.95 |
| 4 | 4 | Seren Leconte | 04 | S9 | RCT Squad | 1:41.06 |
| 5 | 5 | Maely Chevallier | 04 | S14 | France | 1:35.85 |
| 6 | 6 | Harriet Dickinson | 97 | S10 | Gloucester | 1:31.42 |
| 7 | 7 | Fern Ioannou | 03 | S14 | Wycombe Dist | 1:31.17 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 8 | Charli Vines | 98 | S14 | Harrogate | 1:30.25 |
| 1 | 9 | Alani Ferreira | 98 | S13 | South Africa | 1:25.51 |
| 2 | 10 | Mikuni Utsugi | 03 | S9 | Japan | 1:24.43 |
| 3 | 11 | Camilla Luscri | 02 | S13 | Italy | 1:24.04 |
| 4 | 12 | Georgia Sheffield | 05 | S14 | SAFN - GBR | 1:23.90 |
| 5 | 13 | Tessa Marcos | 96 | S14 | France | 1:23.20 |
| 6 | 14 | Rebecca Lewis | 03 | S10 | RCTY - GBR | 1:22.81 |
| 7 | 15 | Megan Neave | 03 | S14 | DERA - GBR | 1:22.73 |
| 8 | 16 | Tamsin Aimee Neef | 03 | S14 | Germany | 1:22.34 |
| 9 | 17 | Eleanor Bamber | 96 | S10 | Man & NW Dis | 1:22.01 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 18 | Neele Labudda | 03 | S12 | Germany | 1:21.26 |
| 1 | 19 | Katie Crowhurst | 04 | S13 | WYCS - GBR | 1:21.13 |
| 2 | 20 | Aliya Bacakoglu | 04 | S9 | BOKE - GBR | 1:20.99 |
| 3 | 21 | Megan Richter | 00 | S8 | ORIM - GBR | 1:20.04 |
| 4 | 22 | Jay McCabe | 02 | S9 | DERE - GBR | 1:19.70 |
| 5 | 23 | Sui Kei Cheong | 02 | S14 | Hong Kong | 1:19.43 |
| 6 | 24 | Lina Watz | 96 | S9 | Sweden | 1:19.11 |
| 7 | 25 | Ho Ying Cheung | 03 | S14 | Hong Kong | 1:16.03 |
| 8 | 26 | Monika Belczewska | 94 | S8 | Poland | 1:15.92 |
| 9 | 27 | Leslie Cichocki | 88 | S14 | USA | 1:15.56 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 28 | Jessika Markkanen | 99 | S9 | Finland | 1:15.37 |
| 1 | 29 | Amisa Kitano | 03 | S14 | Japan | 1:15.16 |
| 2 | 30 | Danielle Hartin | 02 | S14 | BAST - GBR | 1:14.82 |
| 3 | 31 | Marlene Endrolath | 01 | S13 | Germany | 1:14.35 |
| 4 | 32 | Martha Ruether | 94 | S13 | USA | 1:13.89 |
| 5 | 33 | Justine Morrier | 97 | S14 | Canada | 1:12.74 |
| 6 | 34 | Amy Marren | 98 | S9 | Ireland | 1:12.28 |
| 7 | 35 | Pernilla Lindberg | 94 | S14 | Sweden | 1:12.00 |
| 8 | 36 | Mami Inoue | 99 | S14 | Japan | 1:11.21 |
| 9 | 37 | Syuci Indriani | 01 | S14 | Indonesia | 1:11.08 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 38 | Ellen Keane | 95 | S9 | Ireland | 1:10.73 |
| 1 | 39 | Mikaela Jenkins | 03 | S10 | USA | 1:09.67 |
| 2 | 40 | Toni Shaw | 03 | S9 | NCOX - GBR | 1:09.18 |
| 3 | 41 | Elena Krawzow | 93 | S12 | Germany | 1:09.17 |
| 4 | 42 | Alice Tai | 99 | S8 | EALL - GBR | 1:08.69 |
| 5 | 43 | Yui Lam Chan | 03 | S14 | Hong Kong | 1:08.56 |
| 6 | 44 | Sarai Gascon | 92 | S9 | Spain | 1:08.24 |
| 7 | 45 | Oliwia Jablonska | 97 | S10 | Poland | 1:07.86 |
| 8 | 46 | Louise Fiddes | 01 | S14 | HATT - GBR | 1:05.47 |
| 9 | 47 | Jessica-Jane Applegate | 96 | S14 | NORT - GBR | 1:04.13 |