General discretion
Just and convenient plus an underlying cause of action
Procedure
American Cyanamid principles
Interim injunctions that dispose of the case
Overwhelming case on the merits
Defamation claims
Will reject where defence is that substantially true/honest opinion/public interest AND alleged libel not obviously untruthful
Freedom of expression
C must take all practical steps to inform D of application to restrain publication, and court has regard to freedom of expression
Mandatory interim injunction
High degree of assurance
No arguable defence
Normal equitable considerations
Meaning and effect of undertakings given in interim injunction cases