The first six episodes were made in black and white due to a strike at the ITV companies. When colour facilities became available again midway through production of the series, London Weekend Television remade the first episode in colour at the end of the first series block, thus making the series more marketable for overseas broadcasts. The original black-and-white version was subsequently destroyed. Two colour versions of the episode were edited, with the episode intended for overseas broadcast showing Sarah (Pauline Collins) leaving Eaton Place (as she does in "Board Wages") to maintain the series' continuity with the black-and-white episodes omitted.