EVENT 306 Womens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 2 | Hollie Pinder | 02 | S9 | Donc Dartes | 2:09.16 |
| 2 | 4 | Genevieve Hunter | 02 | S8 | Beachfield | 2:00.52 |
| 3 | 6 | Seren Leconte | 04 | S9 | RCT Squad | 1:57.64 |
| 4 | 8 | Erin Boyles | 06 | S14 | Workington | 1:49.88 |
| 5 | 7 | Anna Binns | 88 | S12 | Orion | 1:55.29 |
| 6 | 5 | Erin Swann | 01 | S10 | Bellshill | 2:00.22 |
| 7 | 3 | Eva French | 07 | S10 | Nuneaton | 2:03.41 |
| 8 | 1 | Meghan Willis | 07 | S9 | Torfaen D | 2:15.47 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 10 | Fern Ioannou | 03 | S14 | Bracknell | 1:45.40 |
| 2 | 12 | Charli Vines | 98 | S14 | Harrogate | 1:34.96 |
| 3 | 14 | Harriet Dickinson | 97 | S10 | Gloucester | 1:31.65 |
| 4 | 16 | Cerys Jones | 01 | S14 | Swansea Aq | 1:27.21 |
| 5 | 15 | Anya Falkus | 02 | S13 | Wisbech | 1:28.60 |
| 6 | 13 | Megan Neave | 03 | S14 | Co Derby | 1:34.38 |
| 7 | 11 | Abigail Daly | 05 | S14 | Devonport | 1:41.29 |
| 8 | 9 | Rebecca Franks | 97 | S9 | Newark | 1:47.03 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 18 | Bethan Eckley | 00 | S10 | Co Cardiff | 1:25.07 |
| 2 | 20 | Ffion Butler | 98 | S9 | Birm'ham Uni | 1:23.98 |
| 3 | 22 | Aliya Bacakoglu | 04 | S10 | Halifax | 1:23.52 |
| 4 | 24 | Megan Richter | 00 | S8 | Orion | 1:21.03 |
| 5 | 23 | Coral Farrell | 01 | S10 | Warrington W | 1:23.08 |
| 6 | 21 | Rebecca Lewis | 03 | S10 | RCT Squad | 1:23.63 |
| 7 | 19 | Eleanor Bamber | 96 | S10 | Satellite | 1:24.11 |
| 8 | 17 | Katie Crowhurst | 04 | S13 | Wycombe Dist | 1:26.76 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 26 | Amy Marren | 98 | S9 | Romford Town | 1:13.49 |
| 2 | 28 | Ellen Keane | 95 | S9 | Ireland | 1:10.94 |
| 3 | 30 | Reagan Doig | 98 | S14 | StirlingSwim | 1:08.96 |
| 4 | 32 | Jessica-Jane Applegate | 96 | S14 | Gr Britain | 1:04.46 |
| 5 | 31 | Louise Fiddes | 01 | S14 | Hatfield | 1:07.90 |
| 6 | 29 | Alice Tai | 99 | S9 | Bourmth Coll | 1:09.20 |
| 7 | 27 | Lily Macleod | 01 | S13 | Mt Kelly | 1:12.00 |
| 8 | 25 | Zara Mullooly | 02 | S10 | Guildford Ct | 1:14.53 |