Ex-SAS author Andy McNab dismissed army leaks about the Duke of Cambridge and Prince Harry as "nonsense" and "waffle" in the trial of The Sun's royal editor.

Duncan Larcombe (pictured, Reuters), 39, is accused over his dealings with Sandhurst instructor John Hardy who was allegedly paid more than £23,700 for providing information on the princes and others on 34 occasions.

Giving evidence for Larcombe's defence, McNab said the only thing that would have mattered to the Ministry of Defence was national security.