Industrial action: Byelaw renders picketing unlawful

Peaceful picketing at or near a person's own place of work for the purpose of obtaining or communicating information, or persuading others not to work, is lawful if it is in contemplation of furtherance of a trade dispute. However, this does not give the right to contravene byelaws made in pursuance of a power conferred by statute, holds the High Court in British Airports Authority v Ashton and others 12.5.83 High Court CO/901/82.