| Under-17 Men 100 Metres HEAT 1 (Kingsmeadow Stadium, 26 May) | 1 | | Fawwaz Okunola | (Herne Hill Harriers) | 11.01 | -2.8 | | Q | | 2 | | Rechmial Miller | (Hercules Wimbledon AC) | 11.28 | -2.8 | | Q | | 3 | | Edwin Miles | (Croydon Harriers) | 11.58 | -2.8 | | q | | 4 | | Brandon Murray | (South London Harriers) | 12.13 | -2.8 | | | | 5 | | Kyler Drameh | (Herne Hill Harriers) | 12.36 | -2.8 | | | | | | Darel Stone | (Croydon Harriers) | DQ | -2.8 | | | |
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| Under-17 Men 100 Metres HEAT 3 (Kingsmeadow Stadium, 26 May) | 1 | | Zanson Plummer | (Herne Hill Harriers) | 11.16 | -1.4 | | Q | | 2 | | Aaron Adekoya | (Croydon Harriers) | 11.56 | -1.4 | | Q | | 3 | | Tife Ajibade | (Croydon Harriers) | 11.61 | -1.4 | | | | 4 | | Jake Field | (Sutton & District AC) | 11.73 | -1.4 | | | | 5 | | Bilal Khan | (Herne Hill Harriers) | 12.98 | -1.4 | | | |
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