| Senior Men 800 Metres HEAT 1 (Motspur Park, 19 May) | 1 | | Andrew Layfield | (Epsom & Ewell Harriers) | 1:56.4 | | | | | 2 | | T Nixon | (Guildford & Godalming AC) | 1:57.7 | | | | | 3 | | Michael Rezin | (Aldershot, Farnham & District AC) | 1:58.3 | | | | | 4 | | M Dumbrell | (Epsom & Ewell Harriers) | 2:00.9 | | | | | 5 | | Michael Fidler | (Surrey Beagles AC) | 2:03.3 | | | | | 6 | | Ian Statter | (Croydon Harriers) | 2:05.0 | | | | | 7 | | M Johnson | (Hercules Wimbledon AC) | 2:05.6 | | | | | 8 | | M Harvey | (Collingwood AC) | 2:06.4 | | | | | 9 | | A Orr | (Ranelagh Harriers) | 2:11.6 | | | | |
| | | Senior Men 800 Metres HEAT 2 (Motspur Park, 19 May) | 1 | | Tim Brennan | (Sutton & Cheam Harriers) | 1:57.2 | | | | | 2 | | Martin Smith | (Polytechnic Harriers) | 1:57.6 | | | | | 3 | | Jonathan Owen | (Hercules Wimbledon AC) | 1:58.4 | | | | | 4 | | M Francis | (Hercules Wimbledon AC) | 2:00.4 | | | | | 5 | | D Morris | (Epsom & Ewell Harriers) | 2:01.3 | | | | | 6 | | C Desmond | (unattached) | 2:01.4 | | | | | 7 | | C Whaley | (Belgrave Harriers) | 2:01.9 | | | | | 8 | | A Saul | (Sutton & Cheam Harriers) | 2:08.7 | | | | |
|
| Senior Men 800 Metres HEAT 3 (Motspur Park, 19 May) | 1 | | T Crossman | (Woking AC) | 1:58.1 | | | | | 2 | | H Crabtree | (Herne Hill Harriers) | 1:58.1 | | | | | 3 | | D Askew | (Mitcham AC) | 2:00.1 | | | | | 4 | | G Woodger | (Collingwood AC) | 2:00.2 | | | | | 5 | | R Chapman | (South London Harriers) | 2:01.2 | | | | | 6 | | J Mallett | (Woking AC) | 2:02.9 | | | | | 7 | | P Harvey | (Collingwood AC) | 2:05.3 | | | | | 8 | | S O'Neill | (Windsor, Slough & Eton AC) | 2:05.8 | | | | |
| | | Senior Men 800 Metres FINAL (Motspur Park, 21 May) | 1 | | Tim Brennan | (Sutton & Cheam Harriers) | 1:53.2 | | | | | 2 | | H Crabtree | (Herne Hill Harriers) | 1:53.8 | | | | | 3 | | Andrew Layfield | (Epsom & Ewell Harriers) | 1:53.9 | | | | | 4 | | Jonathan Owen | (Hercules Wimbledon AC) | 1:54.0 | | | | | 5 | | T Crossman | (Woking AC) | 1:54.1 | | | | | 6 | | Michael Rezin | (Aldershot, Farnham & District AC) | 1:54.9 | | | | | 7 | | T Nixon | (Guildford & Godalming AC) | 1:55.1 | | | | | 8 | | D Askew | (Mitcham AC) | 1:57.2 | | | | | 9 | | G Woodger | (Collingwood AC) | 2:03.2 | | | | |
| |