| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | 98 | Delicia Pascall | Hastings AC | U17 | 43.79 | |||
| 2 | 3 | 99 | Charlotte Price | Bracknell AC | U17 | 44.82 | |||
| 3 | 2 | 101 | Caitlyn Spencer | Eastbourne Rovers AC | U15 | 45.43 | |||
| 4 | 1 | 125 | Mollie Barrett | Brighton and Hove AC | U15 | 46.90 | |||
| 4 | 133 | Cariad Norris | Guildford & Godalming | U17 | DNS | ||||
| 6 | 130 | Rosa Howie | Brighton Phoenix | U15 | DNS |
