Any notice required or authorised to be given under this Part—
Where in accordance with Chapter I or II an address in England and Wales is specified as an address at which notices may be given to any person or persons under that Chapter—
Where a tenant is required or authorised to give any notice under Chapter I or II to a person who—
the tenant may, unless he has been subsequently notified by the landlord of a different address in England and Wales for the purposes of this section, give the notice to the landlord—
Subsections (2) and (3) apply to notices in proceedings under Chapter I or II as they apply to notices required or authorised to be given under that Chapter.
Any notice which is given under Chapter I or II by any tenants or tenant must be signed by or on behalf of each of the tenants, or (as the case may be) by or on behalf of the tenant, by whom it is given.
The Secretary of State may by regulations prescribe—