Campaign groups against the bedroom tax from towns and estates across Greater Manchester were set to launch a city-wide federation on Saturday of this week.
They are also preparing to march on the court as part of a national day of action called by the Anti Bedroom Tax and Benefit Justice Federation.
Meanwhile more than 50 people lobbied Southwark council in south London on Wednesday of last week.
The bedroom tax hit around 660,000 poor or disabled households in council or housing association homes in April.
Ministers such as Lord Freud, who has a spare mansion, are pushing the tax.
Many of those hit by the bedroom tax have also been hit by other cuts, such as to council tax benefit. Thousands of people have been dragged before the courts because they are in arrears with their council tax.
Nine out of 10 disabled people in council or housing association homes are cutting back on food or medicine because of the benefit cuts. That’s the finding of a new report by the Papworth Trust charity.
The bedroom tax is a massive threat to what remains of “social” housing. Some housing association bosses have said they may have to demolish larger homes because tenants can’t afford to live there any more.
But local bedroom tax campaigns have given threatened tenants somewhere to turn for solidarity.
In every city thousands of people have not paid the tax and refused to leave their homes.
Campaigns are pledging defend them from eviction.