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| Boys 400 Metres HEAT 1
(Croydon Arena, 28 April) | | 1 | | David McKenzie | (Croydon Harriers) | 54.2 | | | | | | 2 | | David Bond | (Woking AC) | 59.0 | | | | | | 3 | | D Brown | (Garth School, Morden) | 64.6 | | | | | | 4 | | Tim Eaton | (Mitcham AC) | 66.4 | | | | | | 5 | | W Yorke | (Mitcham AC) | 71.8 | | | | |
| | | Boys 400 Metres HEAT 2
(Croydon Arena, 28 April) | | 1 | | R Jackson | (Haslemere Border AC) | 58.2 | | | | | | 2 | | A Ross | (Belgrave Harriers) | 61.8 | | | | | | 3 | | G White | (Guildford & Godalming AC) | 63.3 | | | | | | 4 | | N Tutton | (Mitcham AC) | 63.6 | | | | | | 5 | | S Emalis | (Mitcham AC) | 66.2 | | | | |
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| Boys 400 Metres HEAT 3
(Croydon Arena, 28 April) | | 1 | | Du'aine Ladejo | (King Edward School, Witley) | 59.3 | | | | | | 2 | | P Hull | (Woking AC) | 60.3 | | | | | | 3 | | R Shepherd | (Mitcham AC) | 61.4 | | | | | | 4 | | B Peachey | (Mitcham AC) | 68.8 | | | | | | 5 | | S Middleton | (Woking AC) | 75.1 | | | | |
| | | Boys 400 Metres HEAT 4
(Croydon Arena, 28 April) | | 1 | | N Vaughan | (Epsom & Ewell Harriers) | 61.5 | | | | | | 2 | | D Disley | (Waverley Harriers) | 62.3 | | | | | | 3 | | C Street | (Mitcham AC) | 62.5 | | | | | | 4 | | N Sutchell | (Belgrave Harriers) | 65.2 | | | | |
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| Boys 400 Metres FINAL
(Croydon Arena, 28 April) | | 1 | | David McKenzie | (Croydon Harriers) | 51.7 | | CBP | | | | 2 | | R Jackson | (Haslemere Border AC) | 56.4 | | | | | | 3 | | Du'aine Ladejo | (King Edward School, Witley) | 57.4 | | | | | | 4 | | David Bond | (Woking AC) | 58.3 | | | | | | 5 | | P Hull | (Woking AC) | 60.8 | | | | | | 6 | | N Vaughan | (Epsom & Ewell Harriers) | 62.9 | | | | |
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