Looking at the Album 'Larkrise to Candleford' by the Keith Dewhurst and the Albion band, the line up of musicians is:

Petet Bullock - keyboards
Bill Caddick -vocals/triangle
Martin Carthy - vocals
Shirley Collins - vocals
Howard Evans - trumpet/flugelhorn
Michael Gregory - drums
Ashley Hutchings - bass guitar/vocals
John Kirkpatrick - vocals/button accordian/concertina/melodeon
Doug Morter - electric guitar
Brian Protheroe - vocals/keyboards
Steve Saunders - trombone/euphonium/tuba
Martin impson - banjo
John Tams - vocals/me;odeon/harmonica
Graeme Taylor - electric guitar/vocals.

The song about the witch is on the album, sung by Shirely Collins.