| Senior Men 800 Metres HEAT 1 (Croydon Arena, 18 May) | 1 | | S Fairbrother | (Haringey AC) | 1:53.6 | | | | | 2 | | Simon Wilson | (Hercules Wimbledon AC) | 1:54.0 | | | | | 3 | | Michael Treadwell | (Mitcham & Sutton AC) | 1:54.5 | | | | | 4 | | G Adams | (Belgrave Harriers) | 1:54.7 | | | | | 5 | | T Davies | (Guildford & Godalming AC) | 1:58.5 | | | | | 6 | | Barry Dunn | (Boxhill Racers) | 1:58.8 | | | | | 7 | | Steve Bishop | (Croydon Harriers) | 1:59.2 | | | | | 8 | | P Angell | (Herne Hill Harriers) | 2:02.7 | | | | |
| | | Senior Men 800 Metres HEAT 2 (Croydon Arena, 18 May) | 1 | | Tony Bignell | (Boxhill Racers) | 1:55.0 | | | | | 2 | | J Fairbrother | (Haringey AC) | 1:55.1 | | | | | 3 | | John O'Shea | (Hounslow AC) | 1:55.6 | | | | | 4 | | D Scott | (Belgrave Harriers) | 1:55.9 | | | | | 5 | | I Murdey | (Woking AC) | 1:57.6 | | | | | 6 | | Robbie James | (Epsom & Ewell Harriers) | 1:59.2 | | | | | 7 | | N Bryant | (Herne Hill Harriers) | 2:05.0 | | | | | 8 | | E Laurent | (Herne Hill Harriers) | 2:16.1 | | | | |
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