British liberalism at its finest

"In Britain not a single political refugee from the Continent was prevented from entering the country, or subsequently deported, throughout the nineteenth century. No one thought that Karl Marx in London or Heinrich Heine in Paris should be subject to a gag order. No extradition treaties existed with other countries. Requests for legal action to be taken against regime opponents living in London were invariably rejected and sometimes not even answered. Nor was criticism of British imperialism legally barred in any way. Politically active exiles generally were regarded neither as saboteurs of British foreign policy nor as a danger to internal security."

--Jürgen Osterhammel (trans. by Patrick Camiller), The Transformation of the World : A Global History of the Nineteenth Century (Princeton, N.J. : Princeton University, 2014), pg. 139.