As previousley stated. Write to PO manager at your delivery office and explain that your getting, on a regular basis,mail addressed to j.bloggs and that there is no such person living at your address and you don't want to be responsible for someone elses property,so will they please not send any mail with the name j.bloggs to your address. Hopefully they'll make a special instruction card for the delivery officers walk,which he/she of. should read and take note of. If the delivery officer knows the new address of j.bloggs,he can either redirect of his/her own accord,or sign it off gone away. But don't bin it,it's not yours to destroy,even if it's junk mail