| Event | Prime Minister | Year |
| American declaration of independence | |
| French revolution | |
| Battle of Waterloo | |
| Abolition of slavery in British Empire | |
| Publication of 'Communist Manifesto' | |
| US Civil War | |
| Opening of the Suez Canal | |
| First modern Olympics in Athens | |
| Signing of the armistice after WWI | |
| | Event | Prime Minister | Year |
| Wall Street crash | |
| Abdication of Edward VIII | |
| Declaration of war on Germany | |
| Accession of Queen Elizabeth II | |
| First man on the Moon | |
| UK joins the 'Common Market' (EU) | |
| Falklands War | |
| End of 1st Gulf War | |
| 9/11 attacks on New York | |
|