| Under-20 Women 400 Metres HEAT 1
(Croydon Arena, 14 May) | | 1 | | Susan Bovill | (Sutton & District AC) | 61.2 | | | | | | 2 | | Felicity Urbain | (Aldershot, Farnham & District AC) | 62.2 | | | | | | 3 | | Kate Grimshaw | (Guildford & Godalming AC) | 62.3 | | | | | | 4 | | Victoria Stokes | (Sutton & District AC) | 63.8 | | | | | | 5 | | Emma Willes | (Camberley & District AC) | 68.4 | | | | |
| | | Under-20 Women 400 Metres HEAT 2
(Croydon Arena, 14 May) | | 1 | | Claire Heafford | (Epsom & Ewell Harriers) | 62.0 | | | | | | 2 | | Nikki Moore | (Sutton & District AC) | 62.0 | | | | | | 3 | | Lucy Mart | (Croydon Harriers) | 63.6 | | | | | | 4 | | Clementine Adams | (Aldershot, Farnham & District AC) | 64.2 | | | | |
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