The initiative - which supports people as they try a vegan diet throughout January - expects its biggest year ever in 2019, with an estimated 30,000 sign-ups.
And it's hoping that politicians will join members of the general public.
"The Government has so far done little to heed the advice of the scientific community, which states that reducing meat and dairy consumption is vital if we are to avert catastrophic climate change," Veganuary said in a statement sent to Plant Based News.
"While the public appetite for everything vegan continues to skyrocket, this has not been matched by policy or political leadership.
"Trying vegan for January by switching to tasty plant-based alternatives in the cafeterias of Parliament would be a simple step to take for our leaders to lead by example, and show they're serious about tackling climate change," Rich Hardy, Head of Campaigns at Veganuary, added.
"2018 was huge for bringing veganism out of counter-culture. But 2019 will be the year when it becomes a considered lifestyle choice for millions embracing cruelty-free, health living."
The charity will be campaigning outside Parliament today - with guerilla light projections calling on the Prime Minister to try vegan for January.
Disclaimer: The opinions expressed in this article are prepared in the author's capacity and do not necessarily reflect the views and opinions of Plant Based News itself.Reuse this content
Maria is the Editor of Plant Based News. A former magazine editor, newspaper reporter, and features writer, her work has been published by The Guardian, The Huffington Post, and various regional newspapers. She was previously the editor of Vegan Life magazine and Vegan Trade Journal. She has interviewed a huge range of people, from Prime Ministers to authors, activists, pop stars and actors, and enjoys the varied range of topics writing for PBN allows her to tackle. You can follow her on Twitter @MariaChiorando and Instagram @mariachiorando.
Since you're here...
Plant Based News is a FREE service that receives millions of views each week. This takes a lot of our personal time, money and hard work. But we do it because we KNOW it makes a difference. If those following our reporting helped by contributing, we could do even more. Please consider supporting us so we can create further awareness about animal rights, environmentalism, ethical consumerism and the plant-based lifestyle. Not a false narrative - but information that empowers people to make better choices.