A variety of Doctor Who comic stories have appeared from 1964 to the present. The range of releases, since 1963, reflects the range of stories told and makes Doctor Who the longest running comic strip based on a television series in the world.
With the advent of the Third Doctor, the home of the Doctor Who comic strip changed from TV Comic to Countdown. After that publication failed some two years later, the strip returned to TV Comic, where it remained until Polystyle lost the license to Marvel UK. The Fourth Doctor was the final incarnation to debut in a Polystyle publication. After running original Fourth Doctor stories from 1975 through the middle of 1978, Polystyle's long run of Doctor Who comics ended with six months of reprints of earlier Second and Third Doctor stories, with Tom Baker's likeness superimposed on top of the Doctor who had originally appeared in the adventure. This makes the placement of the very latest Polystyle adventures awkward for anyone who today wants to try to establish a chronology of the Polystyle events. In 1979, with the publication of the first issue of Doctor Who Weekly, the Doctor's adventures passed into the hands of people more influenced by American comic books than British cartoon strips, and thus their style radically altered. By the end of the decade, the only venue left for cartoon — and occasionally even avant garde — strips were the pages of the various World Distributors annuals.
Promotional mini-comics have been given away free with multi-packs of crisps and snacks. A newspaper strip was considered during the early 1990s (and sample work done) for a run in a national newspaper. Other comics have appeared various other merchandising (like collectible cards in ice lollies, and as slide shows for projectors and viewmasters.