| Intermediate Ladies 400 Metres HEAT 1 (Motspur Park, 12 May) | 1 | | Jo White | (Mitcham AC) | 59.5 | | | | | 2 | | A Brown | (Epsom & Ewell Harriers) | 63.2 | | | | | 3 | | K Fennell | (Bracknell AC) | 63.8 | | | | | 4 | | J Payce-Drury | (Mitcham AC) | 64.8 | | | | | 5 | | H Percival | (Sutton & Cheam Harriers) | 65.0 | | | | | 6 | | L O'Sullivan | (Sutton & Cheam Harriers) | 65.6 | | | | |
| | | Intermediate Ladies 400 Metres HEAT 2 (Motspur Park, 12 May) | 1 | | Kathleen Sims | (Guildford & Godalming AC) | 61.7 | | | | | 2 | | C Thixton | (Mitcham AC) | 62.7 | | | | | 3 | | Carol Harding | (Epsom & Ewell Harriers) | 62.7 | | | | | 4 | | J Hennessy | (Croydon Harriers) | 63.4 | | | | | 5 | | V Ballard | (Mitcham AC) | 66.0 | | | | | 6 | | L Plummer | (Hercules Wimbledon AC) | 72.7 | | | | |
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