| Under-17 Women 300 Metres HEAT 1
(Croydon Arena, 15 May) | | 1 | | Simone Harrison | (Croydon Harriers) | 42.2 | | | | | | 2 | | Emily De Nobrega | (Hercules Wimbledon AC) | 43.6 | | | | | | 3 | | Kathryn Burley | (Kingston AC & Polytechnic Harriers) | 46.7 | | | | | | 4 | | R Lacey | (Sutton & District AC) | 48.8 | | | | | | 5 | | C Rode | (Dorking Mole Valley AC) | 50.0 | | | | |
| | | Under-17 Women 300 Metres HEAT 2
(Croydon Arena, 15 May) | | 1 | | Claire Nichols | (Woking AC) | 42.9 | | | | | | 2 | | A Crouch | (Sutton & District AC) | 43.3 | | | | | | 3 | | A Covey | (Sutton & District AC) | 44.1 | | | | | | 4 | | L-J Goodsell | (Hercules Wimbledon AC) | 44.8 | | | | | | 5 | | B Dedman | (Guildford & Godalming AC) | 45.5 | | | | |
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