| Senior Ladies 400 Metres HEAT 1 (Motspur Park, 15 May) | 1 | | Virginia Graham | (Guildford & Godalming AC) | 57.9 | | | | | 2 | | Alison Dunn | (Epsom & Ewell Harriers) | 58.3 | | | | | 3 | | P Gee | (Mitcham AC) | 62.6 | | | | | 4 | | G Sawyer | (Surrey AC) | 65.5 | | | | | 5 | | E Morrell | (Belgrave Harriers) | 66.4 | | | | | 6 | | E Gellender | (Mitcham AC) | 74.3 | | | | |
| | | Senior Ladies 400 Metres HEAT 2 (Motspur Park, 15 May) | 1 | | Shireen Bailey (U23) | (Croydon Harriers) | 57.9 | | | | | 2 | | Jo White | (Mitcham AC) | 58.6 | | | | | 3 | | Julie Compton | (Bracknell AC) | 59.7 | | | | | 4 | | S Flawith | (Guildford & Godalming AC) | 61.3 | | | | | 5 | | Linda Bicknell | (Haslemere Border AC) | 61.8 | | | | | 6 | | A Reid | (Epsom & Ewell Harriers) | 65.8 | | | | |
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| Senior Ladies 400 Metres HEAT 3 (Motspur Park, 15 May) | 1 | | J McBezah | (Selsonia Ladies AC) | 57.5 | | | | | 2 | | Lisa Thompson | (Surrey Beagles AC) | 58.7 | | | | | 3 | | S Perry | (Redhill & Reigate AC) | 61.2 | | | | | 4 | | S Poulter | (Epsom & Ewell Harriers) | 61.4 | | | | | 5 | | Michele Davey | (Surrey AC) | 62.3 | | | | | 6 | | J Christian | (Sutton & Cheam Harriers) | 66.8 | | | | |
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