KembaraXtra-Case Law- Thorne v Motor Trade Association (1937) HL
I. Core Issue:

Legality of a trade union's "Stop List" and its use to enforce pricing rules.
II. Facts:

Motor Trade Association (trade union) maintained a "Stop List" targeting members who violated rules against discounting.
Appellant (Thorne) offered a discount.
Union demanded payment to avoid inclusion on the Stop List.
Thorne claimed this was illegal demand with menaces.
III. Held (Lord Wright):

Liberal Construction of "Menace": The term "menace" should be broadly interpreted and not restricted to threats of physical violence.
Detrimental or Unpleasant Action: "Menace" includes threats of any action detrimental or unpleasant to the person addressed.
Warning of Intended Action: Also encompasses warnings that such action is intended under specific circumstances.
Prima Facie Illegality: Placing someone on a Stop List constitutes a "menace".
Reasonable Cause Exception: Unless the trade union has reasonable cause, such as promoting lawful business interests, the action may be considered illegal.
IV. Outcome:

Appeal Dismissed. The court deemed the Trade Union was acting in promotion of lawful business interests.
V. Key Concepts:

"Menace" Definition: Broad, encompassing more than just threats of violence.
Trade Union Powers: Limited by the requirement of "reasonable cause" to justify potentially menacing actions.
Stop Lists: Potentially unlawful if used unreasonably or for purposes beyond promoting legitimate business interests.