| Youths 400 Metres HEAT 1
(Tooting Bec, 26 April) | | 1 | | Richard Holt | (Blackheath Harriers) | 52.6 | | | | | | 2 | | A Ross | (Belgrave Harriers) | 53.1 | | | | | | 3 | | M Bowers | (Belgrave Harriers) | 53.5 | | | | | | 4 | | Tim Eaton | (Mitcham & Sutton AC) | 53.8 | | | | | | 5 | | P Streetley | (Mitcham & Sutton AC) | 56.3 | | | | | | 6 | | M Ward | (Camberley & District AC) | 57.1 | | | | | | 7 | | David Chapman | (South London Harriers) | 61.7 | | | | |
| | | Youths 400 Metres HEAT 2
(Tooting Bec, 26 April) | | 1 | | Robert Jackson | (Guildford & Godalming AC) | 52.4 | | | | | | 2 | | J Robinson | (Croydon Harriers) | 53.2 | | | | | | 3 | | L Asker | (Epsom & Ewell Harriers) | 56.1 | | | | | | 4 | | S Taylor | (Haslemere Border AC) | 57.1 | | | | | | 5 | | N Vaughan | (Epsom & Ewell Harriers) | 58.7 | | | | | | 6 | | N Masters | (Mitcham & Sutton AC) | 59.5 | | | | |
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