Pro-Corbyn pressure group Momentum has said the policies in Labour's leaked manifesto are nothing more than "common sense" and ridiculed the notion that they will scare off moderate voters.
Adam Klug, a national organiser for the group, told talkRADIO that Jeremy Corbyn's policies are all rational and properly costed, and wouldn't drag Britain back into the industrial chaos of the 1970s.
The manifesto, leaked earlier today, promises to invest heavily in public services, nationalise the energy industry and reverse current labour laws to give the unions more power. Some commentators have suggested this policy platform would leave a vast funding deficit and could encourage a return to the industrial disputes of the pre-Thatcher era.
But Klug said: "Every one of these policies has been costed by the people drafting the manifesto. It’s clear that all policies are fully costed. There’s a direct correlation with where the money’s coming from and where the money’s going to go.
"The idea that these are really hard-left policies doesn’t stand up to scrutiny. A £10 minimum wage, investment in social care, nationalisation of the railways, that’s not hard-left. These aren’t radical, out of touch, ideas.
"Corbyn’s policies are common sense."
On the threat of industrial disputes, Klug said: "I don’t see any signs of going back [to the 1970s]. Having a strong trade union means workers are represented effectively and not exploited. With zero-hour contracts, it isn’t good for our mental and physical wellbeing. Having stronger trade unions is a positive.
"We live in a different world. We live in the 21st century, the nature of the workplace is very different. There’s no signs that lead me to fear a return to the 1970s."
Klug said the vast majority of his Momentum colleagues support the policies outlined in the manifesto, and suggested they offer Britain a real alternative to the ideas propounded by the Conservatives.
"I fear Theresa May’s policies," he said. "[They're] divisive - tax cuts for the richest and most privileged people whilst at the same time cuts for welfare. It's an increasingly polarised vision of society. A lot of her rhetoric has been taken for UKIP, it would lead to a dog-eat-dog society.
"[Labour's blueprint] is a big, bold set of policies. It’s a different vision for Britain, it moves us into a much more equal, fairer society."