The trial began with the jury being sworn in early September, but has since been delayed for legal and practical reasons. On Monday, Judge Maurice Greene updated the jury, which comprises nine women and three men plus two female reserve jurors, about the case's progress.
The husband, from the Stockport area of Greater Manchester, had initially denied the charges before changing his plea. One of his co-defendants, 59-year-old Keith Fotheringham from Dundee, Scotland, has also pleaded guilty to several offences.
The court heard that the husband has now made a witness statement about "what he says happened", the BBC reported. Further details of the statement have not been disclosed.
The case is proceeding at Minshull Street Crown Court, with remaining charges against other co-defendants still pending.