An ASI paper 'Free Market Welfare: The Case for a Negative Income Tax' has featured in a letter written to the Guardian by the Citizen's Income Trust on the feasibility of guaranteeing a universal basic income.
The Adam Smith Institute has recently published a paper on a variant, negative income tax; and Compass, the Fabian Society, and Royal Society of Arts are researching the feasibility. The debate on citizen’s income has shifted from being a debate about its desirability to being one about its feasibility. The next stage might be a debate about how to implement it in the UK before everyone else beats us to it.