The Cannibals (1980)

(a.k.a. Mondo Cannibale and The Cannibal World)

A man is on safari in the jungle with his wife and daughter when the wife gets eaten and the daughter is captured by cannibals. Several years later he goes back to see if his daughter is still alive.

The Cannibals was on the Section 3 Nasties List  and were liable for seizure and forfeiture by the police. No UK re-release.