(1) It shall be lawful for one or more persons, acting on their own behalf or on behalf of a trade union in contemplation or furtherance of a trade dispute, to attend at, or where that is not practicable, at the approaches to, a place where their employer works or carries on business, if they so attend merely for the purpose of peacefully obtaining or communicating information or of peacefully persuading any person to work or abstain from working.
(2) It shall be lawful for one or more persons acting on their own behalf or on behalf of a trade union in contemplation or furtherance of a trade dispute, to attend at, or where that is not practicable, at the approaches to, a place where an employer who is not a party to the trade dispute works or carries on business if, but only if, it is reasonable for those who are so attending to believe at the commencement of their attendance and throughout the continuance of their attendance that that employer has directly assisted their employer who
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