“…ient of economic duress, regardless of whether the threat is to do an unlawful or a lawful act. For example, as Lord Diplock explained in The Universe Sentinel [1983] AC 366, 383G-384C:…”
“…In the first of these cases, Universe Tankships Inc of Monrovia v International Transport Workers Federation [1983] AC 366, the instructions constituted a tort, unless they were issued in furtherance of a trade dispute in which event the union enjoyed immunity under the Trade Union…”