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Jeremy Corbyn’s Momentum followers are pushing a local income tax and higher spending in a bid to tilt Labour councils to the far Left, a secret tape reveals today.

Members of the group in Tory-controlled Wandsworth, a key local elections battleground, are heard at a meeting planning a “complete cultural overhaul” to entrench radical ideas.

One man calls for more inspirational policies to form a Momentum-backed manifesto, saying: “What is it we want Wandsworth council to do? Do we want to raise local income tax? Yes.”

Shadow cabinet member Andrew Gwynne has already said he is looking at bringing in local income tax powers, to raise money on top of council tax charges.

Another member of Momentum criticises the borough Labour group’s support for affordable housing, which many Left-wingers argue is still too expensive for poorer families, saying: “I’d like to see Wandsworth committed to building council houses.”

Others angrily attack Wandsworth’s Labour group leader Simon Hogg for failing to come up with an inspiring manifesto — and they discuss forcing his hand in internal votes. One says that dull policies make chatting to Labour supporters on the doorstep “a complete nightmare, the brain goes dead”.

Ruth Cashman, who chaired the Momentum meeting on March 15, tells the gathering that Wandsworth will have more “lefties” in positions on the council after the May elections.

“We have a much better opportunity than most places in London do, by the ‘lefties’ that we have standing,” she said. “Because of the desperation in Wandsworth, actually we have more Left-wing councillors who could be elected than most people do.”

She described neighbouring Lambeth as “the worst Labour-run council in the country”, complaining: “I spend my entire day, because I’m a [Unison] branch secretary, fighting a Labour council, day in, day out.” She then claims that moderate Mr Hogg is similar and should be told to spend more. “What do you think the Labour group is going to do here that’s going to be any different from what the Lambeth group have been doing? And what have they been doing? They’ve been cutting.”

Another member accuses Mr Hogg, who hopes to become council leader after the May 3 elections, of resisting Left-wing policies. “Momentum here has produced a whole raft of policies, and they’ve been presented to Simon Hogg — where they went then no one knows.” A Momentum member from Putney says the group is getting stronger and now has the casting vote on his branch’s executive committee. A male activist says they have to “politicise the local Labour parties more” and urges “complete cultural overhaul.”

There is a discussion about flooding the area with Momentum activists from safe Labour boroughs on May 3, to help in wards where Left-wingers are standing. The same member advises ignoring local Labour members who object to their campaigning priorities, saying “just do it over their heads”.

Ms Cashman told the Standard: “As a trade union activist I will always support campaigns to save services.”

Paul Scully, the Tory vice-chairman for London, said: “These plans for new local income taxes show how it’s ordinary people who will pay the price if you wake up with the hard-Left controlling Labour and controlling your council.”