| Under-15 Boys 400 Metres HEAT 1 (Kingsmeadow Stadium, 9 May) | 1 | | Andrew Jenner | (Croydon Harriers) | 55.7 | | | | | 2 | | James Churchman | (Guildford & Godalming AC) | 58.6 | | | | | 3 | | Joseph Godsell | (Blackheath Harriers) | 59.6 | | | | | 4 | | Russell Pearce | (Charterhouse School, Godalming) | 61.3 | | | | | 5 | | Nicholas Verkroost | (Charterhouse School, Godalming) | 66.4 | | | | | 6 | | Gavin Simmons | (Kingston AC & Polytechnic Harriers) | 69.4 | | | | | 7 | | Jacques Gallaher | (Tiffin School, Kingston) | 71.9 | | | | | 8 | | Tristan Natolie | (Camberley & District AC) | 76.4 | | | | |
| | | Under-15 Boys 400 Metres HEAT 2 (Kingsmeadow Stadium, 9 May) | 1 | | Lawrence Long | (Richmond & Twickenham AC) | 60.0 | | | | | 2 | | James Hadley | (Charterhouse School, Godalming) | 61.4 | | | | | 3 | | Simon Hawtin | (Kingston AC & Polytechnic Harriers) | 62.5 | | | | | 4 | | Christopher Weighill | (Guildford & Godalming AC) | 64.5 | | | | | 5 | | Robin Potter | (Charterhouse School, Godalming) | 66.8 | | | | | 6 | | Luke Elsworthy | (Croydon Harriers) | 67.7 | | | | | 7 | | Nick Zdrzalka | (Tiffin School, Kingston) | 70.3 | | | | |
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