Pubs and beer duty escalator: Camra and Greg Mulholland
12 December 2012 Last updated at 14:23 GMT
Rising tax on beer is being blamed for contributing to the number of pubs closing across Britain by hundreds of Campaign for Real Ale (Camra) members protesting outside Parliament.
Camra chief executive Mike Benner said he wanted the alcohol duty escalator, which increases the tax by 2% above the inflation rate each year, to be scrapped.
Lib Dem MP Greg Mulholland, who chairs the all-party Save the Pub Group, said the escalator "does not makes sense" and was "doing damage to a great British industry".