Not Competing : 2,3
| Heat Number - 1 | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 4 | Georgia Howell | 02 | S6 | Littleh'pton | 55.73 |
| 1 | 6 | Leah O'Connell | 02 | S7 | London Dis | 46.11 |
| 2 | 8 | Grace Harvey | 98 | S7 | Hoddesdon | 40.68 |
| 3 | 10 | Judit Rolo Marichal | 90 | S7 | Spain | 38.61 |
| 4 | 12 | Eleanor Robinson | 01 | S6 | Northampton | 36.70 |
| 5 | 11 | Susannah Rodgers | 83 | S7 | Beckenham | 36.90 |
| 6 | 9 | E Martin-De-La-Torre | 98 | S6 | teamipswich | 40.66 |
| 7 | 7 | Maisie Summers-Newton | 02 | S6 | Northampton | 42.75 |
| 8 | 5 | Megan Short | 98 | S7 | Satellite | 46.43 |
| 9 | 1 | Sophie Woodward | 04 | S3 | Nova Cent'n | 1:27.60 |