The initial step in owning a monkey in the UK is to find out whether the species is legal to possess for a pet. In britain, it is prohibited to help keep specific species of monkeys as pets, which include primates categorised as "excellent apes" (chimpanzees, bonobos, gorillas, and orangutans). https://lorenzoqhvjx.wikirecognition.com/869096/a_simple_key_for_squirrel_monkey_for_sale_unveiled