| Junior Men 400 Metres HEAT 1
(Motspur Park, 9 May) | | 1 | | David Mote | (Surrey AC) | 51.0 | | | | | | 2 | | J Kearns | (St Jos Coll) | 52.8 | | | | | | 3 | | C Musgrave | (Epsom College) | 53.4 | | | | | | 4 | | Wayne Abrehart | (Mitcham AC) | 53.6 | | | | | | 5 | | G Tullett | (Whitgift School, Croydon) | 55.2 | | | | | | 6 | | D Maggs | (Epsom College) | 55.9 | | | | | | 7 | | J Ereira | (South London Harriers) | 58.3 | | | | |
| | | Junior Men 400 Metres HEAT 2
(Motspur Park, 9 May) | | 1 | | G Henry | (Wallington Grammar School) | 51.6 | | | | | | 2 | | P Weston | (Haslemere Border AC) | 52.5 | | | | | | 3 | | E Bell | (South London Harriers) | 53.2 | | | | | | 4 | | R Eddington | (St Jos Coll) | 54.5 | | | | | | 5 | | Robert Young | (Woking AC) | 55.3 | | | | | | 6 | | A Low | (Walton AC) | 59.2 | | | | |
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