Brexit has parallels to the Vietnam War in terms of the violation of human rights and British people’s reluctance to criticise it for fear of being labelled unpatriotic, according to a professor.

Conor Gearty, professor of human rights law at the London School of Economics, wrote in a blog post: "Brexit strikes me as our Vietnam. Everybody rational knows it is – how can I put it politely? – not going well. But no one with authority seems able to say so."

He warned against Brexit resulting in a "large transfer of power to the executive branch", referring to the so-called Henry VIII clause which allows the Government to adopt and disband EU laws without requiring a vote in Parliament.

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Potential changes after Brexit, Mr Gearty said, could affect equal pay, health and safety protection, holiday entitlements, clean air and food standards – issues that the UK was "hostile" towards as part of its drive to become a "low-regulation, business-friendly" country.

"Expect more denunciations of human rights law as post-Brexit reality bites – ‘taking back control’ is a long war, fed by scapegoats for failure," he wrote.

The professor warned it would be harder to ascertain causality between Brexit and "deaths, ill-health or misery" compared to the "tangible evidence of impact" – ie the body count in Vietnam – and that it was easier to link negative impacts to almost a decade of austerity.

For example, the Institute for Fiscal Studies found there would be 5.2 million children in the UK living in poverty in five years' time.

Brexit: the deciders Show all 8 1 /8 Brexit: the deciders Brexit: the deciders European Union's chief Brexit negotiator, Michel Barnier Getty Brexit: the deciders French President Emmanuel Macron Getty Brexit: the deciders German Chancellor Angela Merkel Reuters Brexit: the deciders Commission President Jean-Claude Juncker EPA Brexit: the deciders The European Parliament's chief Brexit negotiator Guy Verhofstadt Getty Brexit: the deciders Britain's Prime Minister Theresa May Getty Images Brexit: the deciders Britain's Chancellor of the Exchequer, Philip Hammond PA Brexit: the deciders After the first and second appointed Brexit secretaries resigned (David Davis and Dominic Raab respectively), Stephen Barclay is currently heading up the position PA

However, he said a hard Brexit would mean a "shrinking of opportunity for UK citizens – in terms of education abroad; freedom of movement; access to health care when abroad, and much else."

Even under a potential Labour government in the near future, which he said was highly probable, he questioned socialists’ stance towards the Human Rights Act, which he said made figures like Jeremy Corbyn in the 1970s "suspicious... [the Act was thought of as] a tool with which the powerful could resist change."

Mr Gearty added that Irish citizens were also being "ignored".