| Under-17 Women 300 Metres Hurdles (76.2cm) HEAT 1 (Croydon Arena, 12 May) | 1 | | Sophia Van Wyk | (Woking AC) | 48.9 | | | | | 2 | | Sarah Porter | (Sutton & District AC) | 50.4 | | | | | 3 | | J Humphrey | (Sutton & District AC) | 50.5 | | | | | 4 | | Erin Connolly | (Guildford & Godalming AC) | 51.3 | | | | | 5 | | A Powell | (Epsom & Ewell Harriers) | 52.5 | | | | |
| | | Under-17 Women 300 Metres Hurdles (76.2cm) HEAT 2 (Croydon Arena, 12 May) | 1 | | Yewande Ige | (Sutton & District AC) | 44.9 | | | | | 2 | | Clare O'Sullivan | (Sutton & District AC) | 48.5 | | | | | 3 | | A Matthews | (Epsom & Ewell Harriers) | 50.0 | | | | | 4 | | Caroline Parsons | (Guildford & Godalming AC) | 54.7 | | | | |
|