| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | 7 | Ethan Alapafuja | Blackheath and Bromley Harriers A.C. | U15 | 41.53 | |||
| 2 | 3 | 184 | Josephine Bassett | Medway and Maidstone A.C. | U15 | 42.76 | |||
| 3 | 6 | 32 | Stephanie Fisher | Blackheath and Bromley Harriers A.C. | U23 | 43.77 | |||
| 4 | 4 | 156 | Christina Kirkby | Guildford and Godalming A.C. | U15 | 44.39 | |||
| 5 | 2 | 234 | Alexa Forster | The HAWCS | U17 | 44.51 | |||
| 6 | 7 | 178 | Rosie Kornevall | Lewes A.C. | U15 | 46.46 |
