| Under-17 Women 800 Metres HEAT 1 (Kingsmeadow Stadium, 23 May) | 1 | | Sophie Dowle | (Crawley AC) | 2:26.44 | | | Q | | 2 | | Amelia Maguire | (Kingston AC & Polytechnic Harriers) | 2:29.11 | | | Q | | 3 | | Maddie Shaw | (Herne Hill Harriers) | 2:29.19 | | | Q | | 4 | | Emma Jardine | (Epsom & Ewell Harriers) | 2:30.82 | | | q | | 5 | | Eloise Bull | (Reigate Priory AC) | 2:32.95 | | | | |
| | | Under-17 Women 800 Metres HEAT 2 (Kingsmeadow Stadium, 23 May) | 1 | | Zoe Tompkins | (Herne Hill Harriers) | 2:28.71 | | | Q | | 2 | | Evie Higton | (Aldershot, Farnham & District AC) | 2:29.12 | | | Q | | 3 | | Joanna Boxall | (Crawley AC) | 2:29.40 | | | Q | | 4 | | Rebecca Keddie | (Kingston AC & Polytechnic Harriers) | 2:29.76 | | | q | | 5 | | Fiona Wilson | (Sutton & District AC) | 2:34.83 | | | | |
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