Bexley, who grow up in a matter of days, then wind up in the parallel universe with the female version of Lister. The regular cast changed for Series III: Robert Llewellyn came in as Kryten, and Hattie Hayridge replaced the departing Lovett as Holly. Craig Charles, Chris Barrie and Danny John-Jules remained as Lister, Rimmer and Cat, respectively. The character of Kryten was originally intended as a one-off appearance in the series two episode "Kryten", but had returned mainly to broaden the story potential. The series was becoming difficult to write for. At the insistence of Naylor, Kryten returned to complete the team. They had approached David Ross with the intention of bringing him back to play the regular role of Kryten; but Ross was committed to the stage play A Flea in Her Ear and thus not available. Eventually, Grant and Naylor went to see Robert Llewellyn in the stage production Mammon: Robot Born of Woman, playing a robot; they saw his performance and were impressed. Red Dwarf IV (1991) Due to the old studio in Manchester undergoing refurbishment, the recording of Series IV moved to Shepperton Studios. The broadcast was not as originally intended; the BBC had decided to start off with the romantic story of "Camille" for Valentine's Day, while the outbreak of the Gulf War affected the series' running order, thus both the anti-war "Meltdown" and heroic Ace Rimmer's "Dimension Jump" were almost postponed. Red Dwarf V (1992) The series returned without regular director Ed Bye, who had agreed to direct The Full Wax, fronted by his wife Ruby Wax. New director Juliet May found it hard to work with the science fiction elements, which were much more involved and complex than in previous series and left before the series had completed. The remaining episodes were directed by Grant and Naylor. Red Dwarf VI (1993) The writing of Series VI was rushed, due to the fact that the BBC wanted the episodes completed as soon as possible. Grant and Naylor had originally hoped to both write and direct Series VI, but the rapid production schedule meant this was unfeasible, and Andy de Emmony was brought in to direct the series. The writers decided to make changes for the new series—Red Dwarf itself was written out, thus removing Hattie Hayridge as Holly—and the series was set entirely aboard Starbug. During the series, Rimmer would also obtain "hardlight",