| Under-13 Girls 800 Metres HEAT 1 (Kingsmeadow Stadium, 23 May) | 1 | | Lulu King | (Herne Hill Harriers) | 2:33.00 | | | Q | | 2 | | Martha Collings | (Woking AC) | 2:35.58 | | | Q | | 3 | | Susannah Lecoutre | (Guildford & Godalming AC) | 2:36.26 | | | q | | 4 | | Maddie Bashiruddin | (Aldershot, Farnham & District AC) | 2:43.00 | | | | | 5 | | Natasha Watts | (Hercules Wimbledon AC) | 2:48.95 | | | | | 6 | | Molly McConnon | (South London Harriers) | 2:52.75 | | | | | 7 | | Leanne Moore | (Croydon Harriers) | 3:13.24 | | | | |
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| Under-13 Girls 800 Metres HEAT 3 (Kingsmeadow Stadium, 23 May) | 1 | | Roos Van Druten | (Guildford & Godalming AC) | 2:34.05 | | | Q | | 2 | | Amy Miller | (Herne Hill Harriers) | 2:35.75 | | | Q | | 3 | | Alexandra Tait | (Aldershot, Farnham & District AC) | 2:40.34 | | | | | 4 | | Poppy Oliver | (Reigate Priory AC) | 2:44.62 | | | | | 5 | | Beatrix Wright | (Guildford & Godalming AC) | 2:48.32 | | | | | 6 | | Valerie Parocki | (Hercules Wimbledon AC) | 2:56.58 | | | | |
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