Its not a breeder or seedbank, clone only strains are only available as clones. Mostly they are special selected phenotypes of a commercial strain, or old classics who was keeped by someone somewhere...

Cheese originated in 1988-89 as one unique female phenotype out of packet of Sensi Seeds Skunk No. 1 grown somewhere in the Chiltern Hills. This one plant produced impressively large buds and had a very distinctive cheesy odour. It was quickly cloned and named Cheese.

Around 1995 a Cheese clone was passed on to Exodus, an alternative community living in Haz Hall on the edges of Luton. Exodus organised free parties, championed the legalisation of cannabis, grew cannabis themselves and protected each other from the law. They also started CANABIS (Campaign Against Narcotic Abuse Because of Ignorance in Society). Because of all the people that passed through the Exodus community many clones were handed out to visitors and the strain continued to grow in notoriety.