EVENT 306 Womens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 2 | Hollie Pinder | 17 | S9 | Adwick | 2:06.88 |
| 2 | 4 | Imogen Dodds | 10 | S13 | Wellingboro | 1:55.01 |
| 3 | 6 | Evie Lambert | 12 | S9 | Brighouse | 1:48.89 |
| 4 | 8 | Eliza Humphrey | 14 | S11 | Northampton | 1:45.97 |
| 5 | 7 | Eva French | 12 | S10 | Nuneaton | 1:48.66 |
| 6 | 5 | Rebecca Franks | 22 | S9 | Lincoln Vulc | 1:49.48 |
| 7 | 3 | Amber Haycock | 12 | S10 | Rushden | 1:59.72 |
| 8 | 1 | Caitlin Trevor | 16 | S14 | Kingston Roy | 2:19.86 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 10 | Rebecca Hardy-Bishop | 19 | S13 | TigersJersey | 1:41.79 |
| 2 | 12 | Seren Leconte | 15 | S9 | Torfaen D | 1:36.43 |
| 3 | 14 | Charli Vines | 21 | S14 | Harrogate | 1:30.25 |
| 4 | 16 | Natalia Chociaj | 16 | S13 | Aberdeen Dol | 1:21.60 |
| 5 | 15 | Eleanor Bamber | 23 | S10 | Oldham Aqua | 1:30.04 |
| 6 | 13 | Abigail Daly | 14 | S14 | Devonport | 1:33.45 |
| 7 | 11 | Meghan Willis | 12 | S9 | Torfaen D | 1:36.68 |
| 8 | 9 | Erin Boyles | 13 | S14 | Workington | 1:44.74 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 18 | Katie Crowhurst | 15 | S13 | Wycombe Dist | 1:20.41 |
| 2 | 20 | Danielle Hartin | 17 | S14 | Basildon Ph | 1:17.32 |
| 3 | 22 | Toni Shaw | 16 | S9 | Aberdeen Per | 1:07.83 |
| 4 | 24 | Jessica-Jane Applegate | 23 | S14 | Co Norwich | 1:04.26 |
| 5 | 23 | Louise Fiddes | 18 | S14 | Hatfield | 1:07.08 |
| 6 | 21 | Poppy Maskill | 14 | S14 | Alsager | 1:13.31 |
| 7 | 19 | Rebecca Lewis | 16 | S10 | RCT Squad | 1:19.83 |
| 8 | 17 | Aliya Bacakoglu | 15 | S9 | Bo Kirklees | 1:21.20 |