| Under-17 Women 300 Metres HEAT 1
(Croydon Arena, 11 May) | | 1 | | Yewande Ige | (Sutton & District AC) | 41.8 | | | | | | 2 | | Nicola Eglinton | (Woking AC) | 44.7 | | | | | | 3 | | Y White | (Epsom & Ewell Harriers) | 46.4 | | | | | | 4 | | Kathylene Madriaga | (South London Harriers) | 47.2 | | | | | | 5 | | A Powell | (Epsom & Ewell Harriers) | 48.0 | | | | |
| | | Under-17 Women 300 Metres HEAT 2
(Croydon Arena, 11 May) | | 1 | | Kamila Braithwaite | (Croydon Harriers) | 42.4 | | | | | | 2 | | M Tallon | (Sutton & District AC) | 43.8 | | | | | | 3 | | Jenny Skipp | (Epsom & Ewell Harriers) | 45.6 | | | | | | 4 | | K Mander | (Epsom & Ewell Harriers) | 46.4 | | | | | | 5 | | C Bates | (Epsom & Ewell Harriers) | 48.3 | | | | |
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