Wally K. Daly is an English writer for television and radio and one time chairman of the Writers' Guild of Great Britain As well as some minor acting roles including Z-Cars, his writing credits include Juliet Bravo, Casualty and Byker Grove. He also wrote the 1984 radio series Anything Legal featuring Donald Hewlett and Michael Knowles. Daly also wrote a story for Doctor Who called The Ultimate Evil but due to its hiatus the story was cancelled but was published in the popular range of Who books. In the early 1980s, three of his stage plays were performed at the Queen's Theatre, Hornchurch - The Miracle Shirker, Vaughan Street (both 1980) and a stage adaptation of his radio and television play Butterflies Don't Count (1982)