Willo the Wisp beech wood in Oxfordshire, near the director's home. Kenneth Williams provided voices for all of the characters. The principal narrator, Willo the Wisp, was a blue, floating creature drawn as a caricature of him, while the name refers to the ghostly light will-o'-the-wisp from folklore. The other main characters were Arthur the caterpillar (as a gruff cockney), Mavis Cruet, a plump, clumsy fairy with an erratic, magic wand, and the principal antagonist, Evil Edna, a witch in the form of a walking, talking television set who could zap people with her aerials. Other characters included Carwash, a snooty bespectacled cat
The Sarah Millican Television Programme in late 2011, the show was a co-production between So Television and Millican's own company, Chopsy Productions. A Christmas special was announced after series 1 had finished. On 27 April 2012, it was announced that BBC Two had ordered a second series of the show, due to start on 15 January 2013. Series 3 began on Tuesday 24 September 2013, along with extended 40-minute repeats entitled "The Sarah Millican Slightly Longer Television Programme". A "Best Of Series 1 and 2" DVD was released on 11 November 2013 by 4DVD. However, Series 3 and its Christmas special have never been released