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| European Championships, 30 August - 4 September, 1966, Budapest, Hungary | Representing |
| 1 Sept | Men | 200 Metres | HEAT 1 | 5 | Mel Cheskin | (Polytechnic Harriers) | 21.8/-1.3 | | | Great Britain & Northern Ireland |
| 30 Aug | Men | 400 Metres | HEAT 5 | 3 | Martin Winbolt Lewis | (London AC) | 47.4 | Q | | Great Britain & Northern Ireland |
| 31 Aug | Men | 400 Metres | S-FINAL 1 | 6 | Martin Winbolt Lewis | (London AC) | 47 | | | Great Britain & Northern Ireland |
| 2 Sept | Men | 800 Metres | HEAT 3 | 3 | Laurie Taitt | (Herne Hill Harriers) | 14.7/-0.1 | Q | | Great Britain & Northern Ireland |
| 31 Aug | Men | 400 Metres Hurdles | HEAT 2 | 4 | Robin Woodland | (Hercules AC) | 52.7 | Q | | Great Britain & Northern Ireland |
| 1 Sept | Men | 400 Metres Hurdles | S-FINAL 1 | 6 | Robin Woodland | (Hercules AC) | 52.3 | | | Great Britain & Northern Ireland |
| 3 Sept | Men | 4 X 100 Metres Relay | S-FINAL 2 | 8 | Laurie Taitt | (Herne Hill Harriers) | 14.5/0 | | | Great Britain & Northern Ireland |
| 3 Sept | Men | 4 X 400 Metres Relay | HEAT 1 | 2 | Martin Winbolt Lewis (Leg 3) | (London AC) | 3:07.2 | Q | | Great Britain & Northern Ireland |
| 4 Sept | Men | 4 X 400 Metres Relay | FINAL | 5 | Martin Winbolt Lewis (Leg 3) | (London AC) | 3:05.9 | | | Great Britain & Northern Ireland |
| 2 Sept | Men | 50 Kilometres Walk | FINAL | 5 | Ray Middleton | (Belgrave Harriers) | 4:23:01.0 | | | Great Britain & Northern Ireland |
| 30 Aug | Women | 100 Metres | HEAT 4 | 3 | Jill Hall | (Mitcham AC) | 11.9/0 | Q | | Great Britain & Northern Ireland |
| 31 Aug | Women | 100 Metres | S-FINAL 2 | 5 | Jill Hall | (Mitcham AC) | 11.9/0.7 | | | Great Britain & Northern Ireland |
| 2 Sept | Women | 800 Metres | HEAT | | Anne Smith | (Mitcham AC) | DNS | | | Great Britain & Northern Ireland |
| 3 Sept | Women | 4 X 100 Metres Relay | HEAT 1 | 4 | Jill Hall (Leg 4) | (Mitcham AC) | 45.6 | Q | | Great Britain & Northern Ireland |
| 4 Sept | Women | 4 X 100 Metres Relay | FINAL | 6 | Jill Hall (Leg 4) | (Mitcham AC) | 45.4 | | | Great Britain & Northern Ireland |
