Premise: Girls on Top is a British ITV sitcom, broadcast in 1985 and 1986, and made by Witzend for the ITV contractor Central Independent Television. It stars Dawn French, Jennifer Saunders, Ruby Wax and Tracey Ullman, and was written by French, Saunders, and Wax with additional material from Ullman. Despite a poor critical reception, the series was a ratings success.
Hypothesis: The four stars of this show all at least contributed to writing it as well.