Andorra, Sweden, Luxembourg, Guatemala, Tajikistan and Mongolia head a 22-strong list of countries which Britain has never, knowingly, invaded according to author Stuart Laycock.
Of the 193 United Nations member states as well as the Vatican City and Kosovo, all but 22 have at some stage undergone a British invasion.
Source: All the Countries We’ve Ever Invaded: and the Few We Never Got Round To, by Stuart Laycock, The History Press, 2012