(1)  A provision of a retail lease is void to the extent that it has the effect of preventing or restricting a tenant from joining, forming or taking part in the activities of an association to represent or protect the interests of tenants.

(2)  A landlord under a retail lease must not treat or propose to treat a tenant who –

(a) joins or forms; or

(b) proposes to join or form –

an association to represent or protect the interests of tenants less favourably than a tenant in similar circumstances who does not do or propose to do any of those things.