Asked whether he planned to fight on for his proclaimed innocence, Sergeant Nightingale said he had to ask the question: "Realistically can we keep going?".
He said that he had concerns about the "longevity of the family".
More top news
Boris Johnson is expected to attack George Osborne's plan to cut tax credits when he addresses the Conservative Party conference on Tuesday.
Incursions by Russian jets into Turkish airspace have prompted a stern response from Nato's most powerful ally.
Councils have welcomed the prospect of greater autonomy on business rates, but this is not as generous an act as it first appears.