Rooster's Buckeye Pale Session Ale is Vegan Friendly

Company website (January 2024)
https://www.roosters.co.uk/
"Did you know that our entire core range & the vast majority of our limited edition beers are suitable for vegans? We also have two gluten free beers always available in the shape of
Go Backer and Thousand Yard Stare too!"

Company email (October 2021)
"All our beers are vegan friendly unless otherwise stated. At present, the only one which isn’t vegan (containing lactose from the salted caramel adjunct) is ‘First World Problems’.

All our products are packaged on-site, so we have a tight control on the process."

From their website (https://www.roosters.co.uk/core-range, retrieved May 2019)

"Our year-round range of beers are available across a choice of cask, keg and can. All of the beers in our core range are suitable for vegans, so too our the majority of the limited edition beers [unless otherwise stated] we produce!"

[More details at https://www.roosters.co.uk/blog/suitable-for-vegans/]