483. Enforcement of covenants.

Where any tenant covenant1 of a tenancy2, or any right of re-entry contained in a tenancy, is enforceable:

  1.  

    (1)     by the reversioner3 in respect of any premises demised by the tenancy, it is also so enforceable by:

    1.  

      (a)     any person (other than the reversioner) who, as the holder of the immediate reversion in those premises, is for the time being entitled to the rents and profits under the tenancy in respect of those premises4; or

    2.  

      (b)     any mortgagee5 in possession of the reversion in those premises who is so entitled6;

  2.  

    (2)     against the tenant7 in respect of any premises