| Junior Men 400 Metres HEAT 1
(Croydon Arena, 20 May) | | 1 | | Tim Eaton | (Mitcham & Sutton AC) | 50.1 | | | | | | 2 | | Tony Bignell | (Epsom & Ewell Harriers) | 51.9 | | | | | | 3 | | M Giraud | (Hercules Wimbledon AC) | 52.5 | | | | | | 4 | | S Williams | (Haslemere Border AC) | 52.8 | | | | | | 5 | | Stephen Crouch | (Trinity School, Croydon) | 54.4 | | | | | | 6 | | P Hull | (Woking AC) | 55.5 | | | | |
| | | Junior Men 400 Metres HEAT 2
(Croydon Arena, 20 May) | | 1 | | Martin Gaston | (Hercules Wimbledon AC) | 51.2 | | | | | | 2 | | Nick Green | (Boxhill Racers) | 52.5 | | | | | | 3 | | R Scrase | (Epsom & Ewell Harriers) | 53.6 | | | | | | 4 | | M Bowers | (Belgrave Harriers) | 54.4 | | | | | | 5 | | E Schreudar | (Croydon Harriers) | 55.1 | | | | | | 6 | | J Crame | (Holland Sports AC) | 59.7 | | | | |
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