Iran is 6.8 times larger than United Kingdom.
Area: 243,610 km2 World Factbook
Population: 63,742,977 (July 2014) World Factbook
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or simply Britain, is a sovereign state located off the north-western coast of continental Europe. Wikipedia
Area: 1,648,195 km2 World Factbook
Population: 80,840,713 (July 2014) World Factbook
Iran, also known as Persia, officially the Islamic Republic of Iran, is a country in Western Asia. Wikipedia