smuggling became a serious issue in the 18th century, as government regulation of commerce, for both fiscal and economic policy purposes, increased, and as levels of consumption grew with rising prosperity. Contraband was imported directly from France, from the Isle of
Man (until the British government purchased its trading rights in 1765), and from Guernsey. The main goods smuggled were tea (up to the sharp reduction in duties in 1784), tobacco, and spirits, mainly brandy. Suppression was hindered by the connivance of merchants and landowners. Later in the century, as costs rose, large‐scale criminal organization came to play a more prominent part. Contemporaries, anxious to demonstrate the damaging effects of the Wollen Act, maintained that large quantities of wool were illegally exported from Ireland to France, but research shows that the amounts were in fact negligible.
The
revolutionary and Napoleonic wars, followed after 1800 by the growth of free trade and more effective law enforcement, ended the first great age of Irish smuggling. In the 1930s the imposition of tariffs on Irish livestock imports to the United Kingdom (see
economic war) created an illegal cross‐border cattle trade. Across a longer period, higher tariffs and excise duties in independent Ireland encouraged smuggling of spirits, tobacco, and manufactured goods from Northern Ireland. Accession to the
European Union was eventually to undermine this traffic, while creating, through its system of subsidies, a whole range of new opportunities to profit from the clandestine movement of livestock.