The positions were largely linked to the four publishing contracts the publisher has lost this year, but had been expected to cover Sky if Conde Nast had won the business.
Nicola Dicketts, who joined from JWT earlier this year as new business director, has left the company, as have Charlotte Swift, managing editor on four titles, and creative director Clark Edwards, who worked on titles for Harrods and on Trader Monthly, a joint venture with US publisher Doubledown Media. They will not be replaced.
Sue Douglas, president of new business, has also signalled she may not return after several months recuperating from an accident, saying she would be "looking for new opportunities and challenges next year".
The departures follow that of commercial director Tabitha Miller and group ad director Christian Price, whose role was subsequently filled by Emily Rowbotham, previously travel manager on the group's glossy magazine Tatler.
Conde Nast managing director Nicholas Coleridge said the division would continue to publish its three remaining titles for House of Fraser and hotel chains Mandarin Oriental and Maybourne.
The pitch for Sky's repositioned entertainment and listings magazine is now between incumbent John Brown and Sky sister company News Magazines.
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