There's a list of countries and dependencies on Wikipedia.
Out of the 249 places on the list, 169 of them (68%) are
smaller than the United Kingdom.
A few of them are:
Vatican City, Bermuda, Singapore, Hong Kong, Lebanon, Jamaica, Bahamas,
Fiji, Kuwait, Israel, El Salvador, Rwanda, Haiti, Albania, Armenia, Belgium,
Taiwan, Cuba, Switzerland, Netherlands, Denmark, Costa Rica, Sri Lanka,
Ireland, Panama, Austria, Jordan, Portugal, Hungary, North Korea, South Korea,
Iceland, Guatemala, Bulgaria, Liberia, Honduras, Nicaragua, Greece, Nepal,
Bangladesh, Tunisia, Uruguay, Cambodia, Syria, Laos, Romania, Ghana, Uganda.
(These are the only ones of which the news has come to Harvard.
There may be many others but they haven't been discarvard.)