A former News of the World reporter accused over his dealings with a soldier in Prince Harry's regiment told jurors that Clarence House had the power to "blacklist" him if relations had turned sour.

Ryan Sabey denies aiding and abetting then lance corporal Paul Brunt to commit misconduct in a public office by providing details about Harry and other soldiers in his unit to the NoW.

In all, Brunt was paid more than £16,000 by the NoW and The Sun for information and pictures about Harry over an 18-month period in 2006 and 2007, the court has heard.