Residents protesting over the 'cruise liner' warehouses towering over their Tyldesley homes claim they have new evidence that should call a halt to construction.
The group have marched into Wigan town hall to hand-deliver a Stop Notice request in a bid to stop work on the site.
They visited the building today unannounced and asked to see senior staff from the council's planning team to present their request in person, but were told the staff were not available.
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The group is calling for an immediate pause on building work at Astley Business Park and a full environmental reassessment.
Their demand is backed by what they claim is evidence of design changes to landscaping and bunds [mounds of earth to create screening] being submitted only a month before planning approval in June 2024 without any public consultation.
Wigan council has acknowledged receipt of the request and says it will consider its content and the matters raised and get back to the group.
Astley Warehouse Action Group now has nearly 3,000 members in its Facebook Group.
One of the group's steering committee, John Peters, told the Local Democracy Reporting Service (LDRS): "We hope the council takes this stop notice [request] very seriously. It's something that the residents and Wigan council really need to happen, to restore the community for the residents and their confidence in the people who are in charge of the town.
"It's vitally important and we are prepared to go further if necessary. The support from the wider community has been massive.
"We've got a really good social media output - we're getting four million hits and requests from all over the country as to how we've done this. The reason why we've done it is because we won't give up. We will keep going. We will always be here, and we're getting stronger by the day."
The group's Stop Notice submission cites the developer PLP's own noise assessment in 2023, which modelled noise mitigation on three to five-metre-high bunds.
But they say a high-pressure Cadent gas pipeline runs along the north boundary of the site, legally capping the bund height at 1.8 metres - an assessment made in 2022 - long before any noise assessment took place.
Craig Davies, from the group, said: "This restriction, known before planning approval, means the mitigation relied upon in the officer's report can never be delivered. The decision to forgo impact assessments was also, therefore, based on an unachievable design assumption."
A spokesperson for Wigan council said: "We acknowledge we've received the request and the group's information. We will consider the content and the matters raised and we'll get back to the group as soon as we can."
Meanwhile, Tyldesley and Mosley Common's Independent councillor James Fish, who was the only member of the planning committee in June 2024 to vote against the approval of the four 60ft-high warehouses on the doorstep of hundreds of houses, has resigned from the committee and called for wholesale changes to the planning process.
Wigan council has also agreed to an independent audit of its planning processes as a result of the public backlash over the decision to approve the warehouses.