Pub tenant campaigner Inez Ward says next month's anti-pubco protest march on Parliament is set to be much bigger than the demonstration at pubco HQs in January.
More than 300 people have said they take part and "a lot of those are bringing groups", said Ward, who heads the Justice for Licensees campaign.
It takes place on Monday 7 December, the day before MPs in the Business Innovation & Skills Committee scrutinise the action taken by the trade in response to the summer's damning Business & Enterprise Committee report.
Ward organised protests at Punch and Enterprise head offices in January, which attracted up to 200 people.
She said: "From many tenants' perspective, the pubcos are failing to change and feel that it is business as usual for the pubcos, despite numerous press release to the contrary.
"The tenants want to work with their alleged business partners and yet this appears to be a one way street, the pubcos are still failing to listen and act. The tenants want immediate government action to protect current tenants and a full and complete investigation of every aspect of the pubco model by a totally independent body."
The protest meets at 10am at Jubilee Gardens, near the London Eye, before making its way to Parliament via Westminster Bridge for around midday.
JFL has also set up a petition calling for Government action against pubcos — click here for more information.