Possible Clues:

• Mr Rusbridger's joint superintendency
• Post held inside newspaper cunningly, to hide rips
• Organ's head office reorganised Irish depot
• Transform spirited minor house journal's head office
• Councillor's left 39 on vessel - a good job for journalists!
• Newspaper head's role
• This period is for composition in a newspaper office
• Horizon defined by Connolly's
• Team penning rubbish up in newspaper office
• Period hits (anag.)