| Early 19thC | A decline in domestic industry led to emigration from Ireland. |
| 1845 | Great Famine causes massive increase in emigration |
| 1848-50 | Orphan Girl Emigration Scheme to Australia |
| 1920s | Restrictions on immigration to US. Majority of Irish emigrants go to Britain |
| 1935-45 | World War II. Majority of Irish emigrants to Britain are male |
| 1946-51 | The highest proportion ever of Irish emigrants to Britain are female. |