| Under-17 Women 300 Metres HEAT 1
(Croydon Arena, 15 May) | | 1 | | Sisi Baig | (Epsom & Ewell Harriers) | 42.9 | | | | | | 2 | | Claire Phillips | (Sutton & District AC) | 43.8 | | | | | | 3 | | Simone Harrison | (Croydon Harriers) | 43.8 | | | | | | 4 | | A Haque | (Hercules Wimbledon AC) | 43.9 | | | | | | 5 | | Jessica Dash | (Belgrave Harriers) | 44.3 | | | | | | 6 | | R Lacey | (Sutton & District AC) | 47.4 | | | | |
| | | Under-17 Women 300 Metres HEAT 2
(Croydon Arena, 15 May) | | 1 | | Helen Williams | (Walton AC) | 44.2 | | | | | | 2 | | A Crouch | (Sutton & District AC) | 44.7 | | | | | | 3 | | F Eagle | (Mole Valley Runners) | 45.6 | | | | | | 4 | | T Maher | (Sutton & District AC) | 46.3 | | | | | | 5 | | Fiona Peake | (Woking AC) | 47.3 | | | | |
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