England/Britain colonized or administered territories across every continent. Major possessions by region:
Ireland (1170–1922), Scotland (union 1707), Wales (1282–1536).
Canada (1497–), USA (1585–1783), Caribbean (Jamaica, Barbados, Bahamas, etc. 1600s–), Belize, Guyana, Falklands.
West Africa (Gambia, Gold Coast/Ghana, Nigeria, Sierra Leone), East Africa (Kenya, Uganda, Tanzania/Zanzibar), Southern Africa (South Africa, Zambia, Zimbabwe, Botswana, Malawi), North Africa (Egypt, Sudan).
India (1612–1947), Ceylon/Sri Lanka (1796–1948), Burma/Myanmar (1824–1948), Malaya/Malaysia (1786–1957), Singapore (1819–1963), Hong Kong (1842–1997), Borneo (Brunei, Sabah, Sarawak), Aden/Yemen, Gulf states (Kuwait, Bahrain, Qatar, UAE, Oman).
Australia (1788–), New Zealand (1840–), Fiji (1874–1970), Papua New Guinea, Pacific islands (Tonga, Gilbert/Kiribati, Tuvalu, Solomons, etc.).
At its peak (1920s), the British Empire covered ~25% of Earth's land surface and population.