MP Greg Mulholland led a protest outside the Tetley Brewery in Leeds last week to highlight the anger felt over Carlsberg's decision to move production of the iconic brand.
Mulholland, MP for Leeds North West and chairman of the All-Party Save the Pub group, and members of Leeds CAMRA poured cans of Carlsberg down the drains to show their frustration with the plans - and delivered a letter of protest.
"Tetley's is a Leeds brand and if the beer is being brewed elsewhere, without using Leeds water then the product simply ceases to be Tetley's," said Mulholland.
"I have been fighting hard alongside other campaigners to keep the brewery open. It seems that Carlsberg have been deaf to these protests, perhaps now they will listen."
Carlsberg announced last week that it had signed a deal with brewer Marston's, which will see the Midlands company produce the cask version of Tetley.
Mulholland added: "A lot of people stand to lose their jobs and I certainly don't intend to let Carlsberg just walk away from Leeds without a fight."