EVENT 303 Womens MC 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 8 | Maisie Summers-Newton | 14 | S6 | Northampton | 44.12 |
| 4 | 12 | Susannah Rodgers | 33 | S7 | Beckenham | 38.38 |
| 5 | 10 | Judit Rolo Marichal | 26 | S7 | Spain | 40.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 2 | Katie Moss | 15 | S6 | Bracknell | 1:00.44 |
| 1 | 4 | Georgia Howell | 14 | S6 | Littleh'pton | 59.54 |
| 2 | 6 | Megan Short | 18 | S7 | Satellite | 48.38 |
| 3 | 9 | Grace Harvey | 18 | S7 | Hoddesdon | 41.33 |
| 4 | 13 | Eleanor Robinson | 15 | S6 | Northampton | 37.85 |
| 5 | 11 | E Martin-De-La-Torre | 18 | S6 | teamipswich | 40.03 |
| 6 | 7 | Leah O'Connell | 14 | S7 | London Dis | 45.08 |
| 7 | 5 | Suzanne Warren | 37 | S4 | teamipswich | 59.25 |
| 8 | 3 | Laura Pilkington | 19 | S6 | Broxburn | 1:00.26 |
| 9 | 1 | Sophie Woodward | 12 | S3 | Nova Cent'n | 1:34.06 |