(5) Where paragraph (4) applies, a [F2private landlord] [F2landlord] must—
(a)obtain written confirmation from a qualified person that the further investigative or remedial work has been carried out and that—
(i)the electrical safety standards are met; or
(ii)further investigative or remedial work is required;
(b)supply that written confirmation, together with a copy of the report under sub-paragraph (3)(a) which required the further investigative or remedial work to each existing tenant of the residential premises within 28 days of completion of the further investigative or remedial work; and
(c)supply that written confirmation, together with a copy of the report under sub-paragraph (3)(a) which required the further investigative or remedial work to the local housing authority within 28 days of completion of the further investigative or remedial work.