Defamation - Application to strike out defence for failure to comply with a court order-CPR 26.3(1)(a) - Application to strike out defence for failing to disclose reasonable grounds for defending the claim - CPR 26.3(1)(c) - Whether application to amend defence should be granted - CPR 69.3 -The defences of Truth, Fair Comment, Innocent Dissemination and Qualified Privilege -The Defamation Act 2013.