Why was Lee v Lee$$s Air Farming Ltd $[1961]$ AC $12$ such a significant case?

In Lee$$s case, the court found that Salomon$$s case does not promote a separation of entity where the director is also the employee, and in fact owns $99\%$ of the shares. The company was created purely to claim on insurance and was a sham

The case was important because it was one of the first modern cases to affirm the separation of entity for a company, even where a director was also an employee

A shareholder can be a director of a company, but cannot have a contractual relationship if the separation of entity is to be preserved

The widow of a deceased worker was unable to claim against the company because she was not a member of the company and the company was a separate legal entity for insurance purposes