Doctor Who and the Sprites

From Tardis Wiki, the free Doctor Who reference

Doctor Who and the Sprites was the name of a Doctor Who story submitted by Godfrey Porter to the production team in the 1970s for Tom Baker's Doctor. However, the script editor at the time "wasn't keen" so Porter never finished it. He revealed this fact in an interview contained within issue 172 of Doctor Who Magazine. (PROSE: The Thief of Sherwood)