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| Intermediate Ladies 400 Metres HEAT 1 (Motspur Park, 8 May) | 1 | | Sandra Green | (Surrey AC) | 58.5 | | | Q | | 2 | | Angela Wilkins | (Haslemere Border AC) | 60.1 | | | Q | | 3 | | S Evans | (Sutton & Cheam Harriers) | 62.8 | | | | | 4 | | A Reid | (Epsom & Ewell Harriers) | 65.3 | | | | | 5 | | P Peacock | (Selsonia Ladies AC) | 67.5 | | | | | 6 | | I Beckhurst | (Wigmore Ladies AC) | 70.2 | | | | | 7 | | G Clark | (Wigmore Ladies AC) | 74.4 | | | | |
| | | Intermediate Ladies 400 Metres HEAT 2 (Motspur Park, 8 May) | 1 | | P Gee | (Mitcham AC) | 59.6 | | | Q | | 2 | | Susan Trickett | (Epsom & Ewell Harriers) | 59.9 | | | Q | | 3 | | S Poulter | (Epsom & Ewell Harriers) | 60.2 | | | | | 4 | | Sandra French | (Hounslow AC) | 60.8 | | | | | 5 | | Z Ladbrook | (Sutton & Cheam Harriers) | 62.6 | | | | | 6 | | L Nicholson | (Epsom & Ewell Harriers) | 64.8 | | | | |
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| Intermediate Ladies 400 Metres HEAT 3 (Motspur Park, 8 May) | 1 | | Joy Mgbezeh | (Selsonia Ladies AC) | 58.1 | | | Q | | 2 | | Virginia Graham | (Guildford & Godalming AC) | 58.9 | | | Q | | 3 | | K McCarthy | (Mitcham AC) | 60.7 | | | | | 4 | | Linda Bicknell | (Haslemere Border AC) | 60.9 | | | | | 5 | | R Ralph | (Aldershot, Farnham & District AC) | 65.6 | | | | | 6 | | E Gellender | (Mitcham AC) | 72.6 | | | | |
| | | Intermediate Ladies 400 Metres FINAL (Motspur Park, 12 May) | 1 | | Joy Mgbezeh | (Selsonia Ladies AC) | 57.8 | | | | | 2 | | Sandra Green | (Surrey AC) | 59.7 | | | | | 3 | | Susan Trickett | (Epsom & Ewell Harriers) | 59.8 | | | | | 4 | | Virginia Graham | (Guildford & Godalming AC) | 59.9 | | | | | 5 | | P Gee | (Mitcham AC) | 60.0 | | | | | 6 | | Angela Wilkins | (Haslemere Border AC) | 60.9 | | | | |
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