On December 10, 2014, I wrote this blog post – Trickle down economics – the evidence is damning. The discussion was about how inequality undermines growth and that redistribution of national income towards higher income groups does not stimulate income growth for lower income groups. It provided evidence that destroys the basic tenets of mainstream economics and supports a wider social and economic involvement of government in the provision of public services and infrastructure, particularly to low income groups. The ‘trickle down’ fiction was propagated in the late 1970s and early 1980s by the likes of Margaret Thatcher and Ronald Reagan and dovetailed with the emerging dominance of supply-side thinking. Behind ‘trickle-down’ was a nasty neo-liberal plot to undermine state activity and rewind the gains made by the workers under the welfare states and unionism over the course of the C20th. Now a new report from researchers at the London School of Economics – The Economic Consequences of Major Tax Cuts for the Rich – repeats the evidence, and, perhaps because we are further down the road in realising how deficient mainstream macroeconomics is, new evidence of something that we have known since the ideas first came out of the sewers, might push the paradigm shift a little further.