Parasite (1982)

Paul Dean has created a deadly parasite that is now attached to his stomach. He and his female companion, Patricia Welles, must find a way to destroy it while also trying to avoid Ricus & his rednecks, and an evil government agent named Merchant.

Passed uncut for cinema. Parasite was on the Section 3 Nasties List and was liable for seizure and forfeiture by the police. Also passed uncut for video in 1993.