Blind panic grips me at the thought that all over Britain there are people sitting in cosy home offices operating gizmos with ease. I imagine I am the only person alive who can’t print out something from an email without getting in my car and driving to a small shop with no name on Streatham High Road, where a monosyllabic gentleman in Islamic dress will allow me to log on to one of his ancient reconditioned desktop computers and send the document I want to print to his printer, and who will then slap the few stray sheets down on...