Blackadder Goes Forth Melchett and Tim McInnerny as Captain Kevin Darling, who had both appeared in guest roles in "Blackadder the Third" and had appeared regularly in "Blackadder II". This cast appeared together in every episode of the fourth series, although the only episode to feature no guest appearances was "Captain Cook". Miranda Richardson, who had played Elizabeth I in the second series, appeared in a guest role in one episode (as she had in the third series). In their guest performances, actors such as Rik Mayall and Gabrielle Glaister reprised characters they had played in earlier series. Other performers, such as Bill
Blackadder essentially to play himself. Political commentator Vincent Hanna played a character billed as "his own great-great-great grandfather" in the episode "Dish and Dishonesty" of "Blackadder the Third". Hanna was asked to take part because the scene was of a by-election in which Baldrick was a candidate and, in the style of modern television, Hanna gave a long-running "live" commentary of events at the count (and interviewed candidates and election agents) to a crowd through the town hall window. Howard Goodall's theme tune has the same melody throughout all the series, but is played in roughly the style of the period