# Landlord and Tenant Act 1954, Paragraph 1


(1) In this Schedule the following expressions have the meanings hereby assigned to them in relation to a tenancy (in this Schedule referred to as “the relevant tenancy”), that is to say:—
“the competent landlord” means the person who in relation to the relevant tenancy is for the time being the landlord (as defined by section twenty-one of this Act) for the purposes of Part I of this Act;
“mesne landlord” means a tenant whose interest is intermediate between the relevant tenancy and the interest of the competent landlord; and
“superior landlord”, except in paragraph 9 of this Schedule, means a person (whether the owner of the fee simple or a tenant) whose interest is superior to the interest of the competent landlord.
(2) References in this Schedule to “other landlords” are references to persons who are either mesne landlords or superior landlords.

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Source: https://www.legislation.gov.uk/ukpga/Eliz2/2-3/56/schedule/FIFTH/paragraph/1 (the official version)
Page: https://openlegislation.uk/landlord-and-tenant-act-1954/schedule-FIFTH/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.