Vociferous anti-pubco MP Greg Mulholland has given his backing to the Fair Pint lobby day on 20 May.
Following the publication of the Business and Enterprise Committee's damning report on pubco power, Mulholland has urged tenants to get involved with the lobby day.
Tenants are being invited to get in touch with their local MP and set up a meeting with them at Westminster on the day to discuss their problems.
"The Fair Pint Lobby promises to be an important event in which concerned pub goers and lessees can approach their MP's to discuss their concerns," said Lib Dem MP and All Party Save the Pub group chair Mulholland.
"A lobby like this is an extremely effective way of raising concerns in Parliament, hopefully the Government will hear the discontented voices of the people in the trade and do more to protect the British pub industry."
The event will also see the launch of a new report by Fair Pint calling on the Government to break the beer tie. So far 120 MPs have said they will attend.
Fair Pint is offering support to licensees who wish to get involved in the form of letters, briefing material and information on how to contact their MP.
"We are asking anyone who is unhappy to contact their MP and fix up a meeting on 20 May with them," said Fair Pint founder Steve Corbett. "The day will allow licensees to have their voice heard at Westminster.
"The Lobby Day is our opportunity to demonstrate how licensees feel about the tie and how Government action is needed to save our pubs."