| Boys 400 Metres HEAT 1
(Motspur Park, 28 April) | | 1 | | S Staniforth | (Sutton & Cheam Harriers) | 56.8 | | | Q | | | 2 | | P R H Fletcher | (Whitgift School, Croydon) | 58.4 | | | Q | | | 3 | | T A Butler | (Woking AC) | 61.2 | | | | | | 4 | | T Francis | (Beverley School, New Malden) | 63.4 | | | | | | 5 | | I Plowman | (Epsom & Ewell Harriers) | 64.4 | | | | | | 6 | | Murray Reid | (Epsom & Ewell Harriers) | 66.2 | | | | | | 7 | | S W Beazley | (Woking AC) | 74.6 | | | | |
| | | Boys 400 Metres HEAT 2
(Motspur Park, 28 April) | | 1 | | J Rowland | (Dorking St Paul's AC) | 57.6 | | | Q | | | 2 | | A R Vaughan | (Epsom & Ewell Harriers) | 57.8 | | | Q | | | 3 | | A Goppy | (Mitcham AC) | 60.2 | | | | | | 4 | | C Knight | (Collingwood AC) | 62.2 | | | | | | 5 | | A Chambers | (Collingwood AC) | 66.8 | | | | | | 6 | | A Malcolm | (Hercules Wimbledon AC) | 68.2 | | | | | | 7 | | I R Down | (Hercules Wimbledon AC) | 70.1 | | | | |
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| Boys 400 Metres HEAT 3
(Motspur Park, 28 April) | | 1 | | B Pinsent | (St Josephs's College, Upper Norwood) | 59.3 | | | Q | | | 2 | | James Lewis | (Collingwood AC) | 60.8 | | | Q | | | 3 | | P Raffle | (Sutton & Cheam Harriers) | 63.2 | | | | | | 4 | | Tom Kane | (Epsom & Ewell Harriers) | 64.1 | | | | | | 5 | | S D Pickin | (Surrey AC) | 64.7 | | | | | | 6 | | B Clark | (Dorking St Paul's AC) | 65.1 | | | | | | 7 | | R Seller | (Sutton & Cheam Harriers) | 73.0 | | | | |
| | | Boys 400 Metres FINAL
(Motspur Park, 29 April) | | 1 | | D Pinsent | (St Josephs's College, Upper Norwood) | 55.9 | | | | | | 2 | | J Rowland | (Dorking St Paul's AC) | 56.1 | | | | | | 3 | | S Staniforth | (Sutton & Cheam Harriers) | 56.2 | | | | | | 4 | | A R Vaughan | (Epsom & Ewell Harriers) | 56.7 | | | | | | 5 | | P R H Fletcher | (Whitgift School, Croydon) | 57.4 | | | | | | 6 | | James Lewis | (Collingwood AC) | 59.8 | | | | |
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