| Youths 400 Metres HEAT 1
(Croydon Arena, 29 April) | | 1 | | R Rollock | (Mitcham AC) | 53.8 | | | | | | 2 | | Sean Richards | (Belgrave Harriers) | 54.8 | | | | | | 3 | | P Penfold | (Mitcham AC) | 55.7 | | | | | | 4 | | C Bleasdale | (Guildford & Godalming AC) | 56.6 | | | | | | 5 | | M Francis | (Sutton & Cheam Harriers) | 57.5 | | | | | | 6 | | S Froud | (Woking AC) | 60.7 | | | | | | 7 | | J Standing | (Walton AC) | 62.7 | | | | |
| | | Youths 400 Metres HEAT 2
(Croydon Arena, 29 April) | | 1 | | M Dann | (Hercules Wimbledon AC) | 53.6 | | | | | | 2 | | M Morley | (Hercules Wimbledon AC) | 55.6 | | | | | | 3 | | S Frogley | (Haslemere Border AC) | 57.4 | | | | | | 4 | | S Davie | (Walton AC) | 57.8 | | | | | | 5 | | J Rodrigues | (Walton AC) | 61.4 | | | | | | 6 | | R Froud | (Woking AC) | 63.1 | | | | |
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| Youths 400 Metres HEAT 3
(Croydon Arena, 29 April) | | 1 | | David Haizelden | (Sutton & Cheam Harriers) | 55.5 | | | | | | 2 | | S Ringrow | (Hercules Wimbledon AC) | 57.4 | | | | | | 3 | | D Sherry | (Guildford & Godalming AC) | 58.4 | | | | | | 4 | | A Lowe | (Epsom & Ewell Harriers) | 60.3 | | | | | | 5 | | N Bellis | (Waverley Harriers) | 60.6 | | | | | | 6 | | D O'Shea | (Woking AC) | 67.8 | | | | |
| | | Youths 400 Metres FINAL
(Croydon Arena, 29 April) | | 1 | | David Haizelden | (Sutton & Cheam Harriers) | 51.9 | | | | | | 2 | | Sean Richards | (Belgrave Harriers) | 52.7 | | | | | | 3 | | M Dann | (Hercules Wimbledon AC) | 53.4 | | | | | | 4 | | R Rollock | (Mitcham AC) | 54.9 | | | | | | 5 | | M Morley | (Hercules Wimbledon AC) | 55.4 | | | | | | 6 | | P Penfold | (Mitcham AC) | 56.7 | | | | | | 7 | | S Ringrow | (Hercules Wimbledon AC) | 57.8 | | | | |
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