Reviews provided by RottenTomatoes
New York Times:
This is the 25th full-length animated feature from Walt Disney studios, and professionally put together as it is, many of the ingredients may seem programmed to those who have seen some of the others.
It's quite good, though by the impossible standards the film sets for itself it inevitably falls short.
The backgrounds are as richly textured and detailed as in any other Disney film.
By the end of The Black Cauldron I was remembering, with something of a shock of nostalgia, the strength and utter storytelling conviction of the early Disney animators. The Black Cauldron is a return to the tradition.
As usual it is technically excellent, but the charm, characterisation and sheer good humour that made features like Pinocchio and Jungle Book so enjoyable are sadly absent.
The characters, though cute and cuddly and sweet and mean and ugly and simply awful, don't really have much to do that would remain of interest to any but the youngest minds.