| Boys 400 Metres HEAT 1
(Tooting Bec, 27 April) | | 1 | | P Hull | (Woking AC) | 56.2 | | | | | | 2 | | Richard Holt | (Blackheath Harriers) | 56.5 | | | | | | 3 | | Mark Purser | (Croydon Harriers) | 56.9 | | | | | | 4 | | J Hall | (Guildford & Godalming AC) | 58.0 | | | | | | 5 | | C Pyle | (Dorking St Paul's AC) | 61.3 | | | | | | 6 | | P Drury | (Mitcham & Sutton AC) | 65.0 | | | | |
| | | Boys 400 Metres HEAT 2
(Tooting Bec, 27 April) | | 1 | | J Robinson | (Croydon Harriers) | 54.8 | | | | | | 2 | | A Ross | (Belgrave Harriers) | 56.2 | | | | | | 3 | | M Bowers | (Belgrave Harriers) | 58.1 | | | | | | 4 | | R Moth | (Mitcham & Sutton AC) | 59.3 | | | | | | 5 | | S Allen | (Mitcham & Sutton AC) | 60.5 | | | | | | 6 | | D Koch | (Mitcham & Sutton AC) | 64.5 | | | | |
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| Boys 400 Metres HEAT 3
(Tooting Bec, 27 April) | | 1 | | David Bond | (Woking AC) | 55.5 | | | | | | 2 | | P Baker | (Mitcham & Sutton AC) | 57.0 | | | | | | 3 | | A Cargill | (Garth School, Morden) | 58.9 | | | | | | 4 | | S Taylor | (Haslemere Border AC) | 60.0 | | | | | | 5 | | C Barker | (Woking AC) | 62.8 | | | | | | 6 | | M Millward | (Woking AC) | 68.5 | | | | |
| | | Boys 400 Metres FINAL
(Tooting Bec, 27 April) | | 1 | | Richard Holt | (Blackheath Harriers) | 53.2 | | | | | | 2 | | David Bond | (Woking AC) | 54.5 | | | | | | 3 | | P Hull | (Woking AC) | 55.3 | | | | | | 4 | | J Robinson | (Croydon Harriers) | 55.5 | | | | | | 5 | | A Ross | (Belgrave Harriers) | 55.6 | | | | | | 6 | | Mark Purser | (Croydon Harriers) | 57.0 | | | | | | 7 | | P Baker | (Mitcham & Sutton AC) | 57.2 | | | | | | 8 | | J Hall | (Guildford & Godalming AC) | 58.8 | | | | |
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