Libertarianism in the United Kingdom can either refer to a political movement synonymous with anarchism, left-libertarianism and libertarian socialism, or to a political movement concerned with the pursuit of propertarian right-libertarian ideals in the United Kingdom which emerged and became more prominent in British politics after the 1980s neoliberalism and the economic liberalism of the premiership of Margaret Thatcher, albeit not as prominent as libertarianism in the United States in the 1970s and the presidency of Republican Ronald Reagan during the 1980s.