In MacShane and Ashton v Express Newspapers Ltd  IRLR 35 HL, the House of Lords held that the Court of Appeal had erred in granting an interlocutory injunction restraining the defendants from instructing NUJ members employed on national newspapers to "black" copy from the Press Association.
In JE Broome v Director of Public Prosecutions  IRLR 26 HL, the House of Lords held that the appellant had no authority or excuse under the Industrial Relations Act, section 134 for willfully obstructing free passage along the highway contrary to the Highways Act, section 121.
In Secretary of State for Employment v ASLEF (No 2)  2 All ER 949 CA, the Court of Appeal held that works rules or job descriptions are not of themselves contractual. They are guides as to the way in which work should be performed and should be interpreted in a reasonable way. If interpreted in an unreasonable way in order to disrupt employment this will be breach of contract.
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