After the success of the first seven episodes of the radio series, all broadcast in 1978, and while the second radio series was being recorded, Douglas Adams was commissioned to deliver a pilot script for a television adaptation on 29 May 1979, to be delivered by 1 August. A fully animated version was briefly discussed in the autumn of 1978, but it was eventually decided to make most of the series feature "live action" and only animate "The Guide'"s entries. John Lloyd, who had worked with Adams on the first radio series, is credited with starting the process of adapting the series for television, after the receipt of the pilot script, with a memo to the head of light entertainment (John Howard Davies) in September 1979. Adams was still working on scripts for the second radio series of "Hitchhiker's" and working as script editor for "Doctor Who", and thus the BBC extended the deadline for the pilot script of the television adaptation to the end of November. The script for the pilot was delivered in December 1979, and terms for the five remaining scripts were agreed upon in January 1980. While there was some resistance to a project considered "unfilmable," Alan J. W. Bell was given the duties to produce and direct the TV adaptation. John Lloyd was signed as associate producer.