The introduction of legal cannabis in the UK could earn the Treasury between £1 billion and £3.5 billion (€1.145 to €4 billion) a year in tax revenues, a new report suggests. The international development organization Health Poverty Action says the "time has come" to legalize and regulate cannabis in the UK and that the windfall could be used to cover the gap in the NHS budget. "Prohibition has failed,” said the group’s advocacy officer, Natasha Horsfield. “From our perspective, it’s about regulating the market to improve public health outcomes and create a safer environment."