Former News International chief executive Rebekah Brooks will find out on Tuesday if she will be charged with perverting the course of justice during the phone-hacking scandal.
Mrs Brooks and six other suspects - understood to include her racehorse trainer husband Charlie and the company's head of security Mark Hanna - will learn their fate after answering bail, it is understood.
The extensive Metropolitan Police inquiry into phone-hacking and corruption has yet to launch any prosecutions since it began in January last year.
Mrs Brooks' former PA, Cheryl Carter. a 46-year-old News International chauffeur and two security consultants, aged 39 and 38, are also expected to be included in an announcement by the Crown Prosecution Service.
Mrs Brooks, a Warrington-born high-flyer in Rupert Murdoch's media empire, is one of the most high profile figures in the newspaper industry.
The decision from prosecutors comes just days after she gave almost an entire day's evidence at the Leveson Inquiry into press standards.
Mrs Brooks became News of the World editor in 2000 aged 31, landed the top job at The Sun in 2003 and was appointed chief executive of News International in 2009 before resigning in July 2011.
Days later the 43-year-old was arrested over alleged phone-hacking and corruption, offences for which she remains on bail without charge.
She was arrested again in March in connection with the separate perverting the course of justice allegation, with her husband and the five others.
The charges relate to one of five files handed to the director of public prosecutions.