“In my judgment it is plain from these authorities (and from the special nature and role of personal service discussed above) that the process of leaving a document with the intended recipient must result in them acquiring knowledge that it is a legal document which requires their attention in connection with proceedings. Whilst this is expressed as requiring that the intended recipient be “told” the nature of the document, the focus is on the knowledge of the recipient, not the process by which it is acquired. Whilst in most cases knowledge of the nature of the document will be found to have been imparted by a simple explanation, it is clear that it can … also readily be inferred from pre-existing knowledge, prior dealings or from conduct at the time of or after service, including conduct in evading service: see Barclays Bank of Swaziland v Hahn[1989] 1 WLR 506 at 512A.”