| Youths 400 Metres HEAT 1
(Wimbledon Park, 24 April) | | 1 | | Tom Kane | (Epsom & Ewell Harriers) | 53.5 | | | | | | 2 | | Michael Carlile | (Croydon Harriers) | 55.2 | | | | | | 3 | | A Frogley | (Haslemere Border AC) | 55.3 | | | | | | 4 | | G Pond | (Mitcham AC) | 57.1 | | | | | | 5 | | S Boyle | (Walton AC) | 58.3 | | | | | | 6 | | J Wright | (King Edward School, Witley) | 59.8 | | | | | | 7 | | C Andrews | (Mitcham AC) | 60.9 | | | | |
| | | Youths 400 Metres HEAT 2
(Wimbledon Park, 24 April) | | 1 | | Richard Haizelden | (Sutton & Cheam Harriers) | 54.0 | | | | | | 2 | | M Ladell | (Beverley School, New Malden) | 56.2 | | | | | | 3 | | P Rose | (Dorking St Paul's AC) | 57.6 | | | | | | 4 | | L McAdam | (Waverley Harriers) | 57.8 | | | | | | 5 | | P Heron | (Kings College School, Wimbledon) | 59.3 | | | | | | 6 | | J Ellison | (Surrey Beagles AC) | 60.9 | | | | |
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| Youths 400 Metres HEAT 3
(Wimbledon Park, 24 April) | | 1 | | J Sutton | (Epsom College) | 55.1 | | | | | | 2 | | C Worby | (Mitcham AC) | 55.2 | | | | | | 3 | | Richard Vassall | (Waverley Harriers) | 55.3 | | | | | | 4 | | F Sarkodie | (Wandsworth School) | 55.5 | | | | | | 5 | | P Brown | (Mitcham AC) | 55.5 | | | | | | 6 | | M Daynton | (Aldershot, Farnham & District AC) | 59.5 | | | | |
| | | Youths 400 Metres FINAL
(Wimbledon Park, 24 April) | | 1 | | Richard Haizelden | (Sutton & Cheam Harriers) | 52.7 | | | | | | 2 | | Tom Kane | (Epsom & Ewell Harriers) | 53.0 | | | | | | 3 | | C Worby | (Mitcham AC) | 55.3 | | | | | | 4 | | J Sutton | (Epsom College) | 55.4 | | | | | | 5 | | M Ladell | (Beverley School, New Malden) | 56.1 | | | | | | 6 | | Michael Carlile | (Croydon Harriers) | 56.5 | | | | |
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