Before an application for an order under section 24 is made in respect of any premises to which this Part applies by a tenant of a flat contained in those premises, a notice under this section must (subject to subsection (3)) be served by the tenant on—
A notice under this section must—
The appropriate tribunal may (whether on the hearing of an application for an order under section 24 or not) by order dispense with the requirement to serve a notice under this section on a person in a case where it is satisfied that it would not be reasonably practicable to serve such a notice on the person, but the tribunal may, when doing so, direct that such other notices are served, or such other steps are taken, as it thinks fit.
In a case where—
the landlord shall, as soon as is reasonably practicable after receiving the notice, serve on the mortgagee a copy of the notice.