| Senior Men 400 Metres HEAT 1 (Motspur Park, 14 May) | 1 | | Bolaji Odunsi | (Croydon Harriers) | 50.1 | | | | | 2 | | M.Jackson | (S&E) | 50.8 | | | | | 3 | | J-P.Fernee | (Epsom & Ewell Harriers) | 51.3 | | | | | 4 | | G.Sagar | (Belgrave Harriers) | 51.6 | | | | | 5 | | A.Wigley | (Mitcham AC) | 53.5 | | | | | 6 | | M.Leeson | (Hercules Wimbledon AC) | 54.4 | | | | | 7 | | Gerrard Shannon | (Croydon Harriers) | 60.0 | | | | |
| | | Senior Men 400 Metres HEAT 2 (Motspur Park, 14 May) | 1 | | Michael Alleyne (U23) | (Belgrave Harriers) | 50.1 | | | | | 2 | | Dapo Laifa | (Croydon Harriers) | 50.7 | | | | | 3 | | Paul Harmsworth | (Walton AC) | 50.8 | | | | | 4 | | M.Bazire | (Belgrave Harriers) | 51.0 | | | | | 5 | | Keith Andrew | (Hercules Wimbledon AC) | 52.1 | | | | | 6 | | A.Vaughan | (Epsom & Ewell Harriers) | 53.2 | | | | | 7 | | K.Green | (Hercules Wimbledon AC) | 53.7 | | | | |
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