Curtain falls on window blinds boss as he's caged for being £30k cocaine courier Paul Duffy, who owns Perfect Window Blinds in Johnstone, was locked up after being caught with cocaine in his car. Updated Paul Duffy, the owner of Perfect Window Blinds, was caught ferrying prop and cooncil coke in Johnstone, Renfrewshire. (Image: Daily Record.) Join thousands of others and get the latest Scottish crime and courts news sent straight to your inbox with our daily Criminal Record newsletter.Invalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.