The Canterbury Tales is a 1998 adaptation of Chaucer's masterwork presided over by S4C (whose contributions to animation I summerised here). It is divided into three episodes, each containing three stories, alongside linking sequences featuring the pilgrim storytellers and even a stop-motion Chaucer as narrator. A DVD was released in 2005, but is unfortunately now out of print.
The series was a collaboration between Moscow-based Christmas Films, who animated the linking sequences and some of the stories, and various British studios. The first of the UK-animated sequences is The Nun's Priest's Tale, directed by Ashley Potter and Dave Antrobus of aka Pizazz (now Studio AKA).
Next is The Knight's Tale, also by aka Pizazz, but this time directed by Dave Antrobus and Mic Graves.
And finally, the most acclaimed sequence in the whole series - Joanna Quinn's interpretation of The Wife of Bath's Tale. This one is available online; I've embedded it below.