| Under-17 Men 400 Metres HEAT 1 (Croydon Arena, 15 May) | 1 | | C Bartlett | (Epsom & Ewell Harriers) | 53.4 | | | | | 2 | | James Hilston | (Belgrave Harriers) | 53.7 | | | | | 3 | | S Archibald | (Hercules Wimbledon AC) | 54.5 | | | | | 4 | | Keith Wu | (Croydon Harriers) | 55.1 | | | | | 5 | | B Ramasami | (Epsom & Ewell Harriers) | 55.8 | | | | | 6 | | Andrew Lassetter | (Oxted S) | 56.1 | | | | | 7 | | L Price | (Sutton & District AC) | 57.8 | | | | | 8 | | Damian Serra | (Waverley Harriers) | 62.1 | | | | |
| | | Under-17 Men 400 Metres HEAT 2 (Croydon Arena, 15 May) | 1 | | Stephen Mitchell | (Epsom & Ewell Harriers) | 53.6 | | | | | 2 | | T Merchant |
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