The 100-strong pub estate across the Channel Islands and West Country is supporting the local Straws Suck campaign, which involves stopping the use of plastic straws and switching to biodegradable alternatives.
It has already made the switch to biodegradable paper straws which do not damage marine life.
The Liberation Group move follows Oakman Inns, which launched its own Ban the Straw campaign in April, and All Bar One, which announced last month that it would be phasing out plastic straws.
Liberation pubs will be encouraging their customers to join the campaign to cut plastic waste through social media and on its pub blackboards with the #refusethestraw hashtag.
Plastic straws are made from polypropylene – a petroleum product designed to last forever. The straws are particularly harmful to marine life, with more than 1m seabirds and 100,000 marine mammals killed by plastic waste each year. It is estimated that unless there is a significant shift, plastic refuse in the ocean will outweigh fish by 2050.
“Our pubs use millions of straws each year, so we see the switch as really benefiting the environment,” said Liberation Group managing director of pubs and inns Jayson Perfect.
“Plastic straws are a blight on our coastlines, marine life and our oceans. This is a problem that is entirely avoidable. As an island company which supports many charitable organisations, I feel we also have a moral obligation to support helping marine mammal life where possible.”