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| 400 A |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 55.8 | William Marshall Slack | | U15 | M | 14 | 31.05.96 | | Poole AC/Team Dorset | 54.0 | 54.0 |  |
| 2 | 57.4 | Declan Toth | | U15 | M | 14 | 14.11.95 | | Bournemouth | 56.3 | 54.2 | |
| 3 | 59.4 | Max Davis | | U15 | M | 14 | 18.12.95 | | Camberley | 57.3 | 53.2 | |
| 400 B |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 58.4 | Peter Horne | | U15 | M | 14 | 22.09.95 | | Dorchester | 56.6 | 54.2 | |
| 400 |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 54.2 | Mylo Ofei-Kwatia | | U17 | M | 16 | 04.11.93 | | Poole AC/Team Dorset | 51.9 | 51.9 | |
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