There has been some controversy over whether it is a work by Banksy. We now know it is.
The motive relates to Banksy’s intervention at the 2024 edition of the festival, where he released a migrant raft during The Idles’ set on the main stage. See previous post: https://banksyunofficial.com/2024/07/01/banksy-confirms-migrant-raft-at-glastonbury-30-june-2024/
The poster was on sale for a few days at the La Linterna printshop at Glastonbury, until they sold out. It’s the second year that Team Banksy has collaborated with the Colombian printers. Last year’s posters by Team Banksy were numbers 1 and 4 in the display below:
La Linterna is a historic printing shop located in the San Antonio neighbourhood of Cali, Colombia, founded in 1934. It specialises in the artisanal printing of posters using traditional techniques such as linocut and movable type. The printing shop is notable for preserving antique machines, some from the 19th century. Thanks to their artisanal process, each poster is unique and an authentic work of art. La Linterna has a European branch that collaborates with different summer festivals. Source: https://lalinternacali.com and @lalinternacali
Banksy unofficial 