APPEAL – application for leave to appeal – interlocutory orders – application to add defendants – whether arguable cause of action – application to add further fresh claims – questions of practice and procedure – whether proposed new pleadings defective – whether error on part of trial judge – whether refusal of leave would cause substantial injustice

TORTS – duty of care – liability for criminal activities of third party – whether arguable that business directly liable for criminal acts of employee or independent contractor in circumstances where company had knowledge of criminal tendencies and created opportunity for third party to provide services to members of the public – whether claim reasonably arguable