Not sure if Chris and Alex of Poster Roast have posted about this series at all but thought some folks here may be interested.
Poster Roast have been working with a UK merch company call Awesome Merchandise to make a series of collab prints that are given away with every order that comes in to them. All the artist are GP regulars and tee versions are also available. So far there has been Drew Millward, WeThreeClub and now the lowly depths of Luke Drozd. These will be followed by Armyofcats, Telegramme Studio and Two Ducks Disco.
More info and images are here: http://www.awesomemerchandise.com/poster-roast-design-series-c-234.html