Don’t forget the microstates of Monaco and Andorra. They too legalised homosexuality in the late 18th century because of Napoleon. And the influence of his legal code eventually spread to Italy, Spain, most of Latin America, Turkey, San Marino and even Vatican City, although Spain would later ban homosexuality again from 1954 until 1979.

If Ireland was annexed by France instead of Britain, we probably would have decriminalised homosexuality around the same time as France, but instead we didn’t do it until 1993.