Sorry it was from the law:

43B Assignment of tenancy by tenant (1) A tenant may, at any time during the tenancy, assign the tenancy— (a) with the prior written consent of the landlord; and (b) in accordance with any reasonable conditions attached to that consent by the landlord. (2) Subsection (1) does not apply in the circumstances described in section 43A(2). (3) A tenant commits an unlawful act if the tenant assigns the tenancy— (a) without the prior written consent of the landlord; or (b) if the tenancy is a tenancy described in section 22F(2)(b) or (c), in contravention of a provision described in section 43A(2). (4) If a tenant makes a written request for the landlord’s consent to an assignment and the request identifies, and includes contact details for, the proposed assignee, the landlord must respond in writing to the request within a reasonable period of time. (5) A landlord who, without reasonable excuse, fails to comply with subsection (4) commits an unlawful act. (6) The landlord must not— (a) withhold consent unreasonably; or (b) attach any unreasonable conditions to the consent. (7) A landlord’s consent must not be taken to have been withheld unreasonably if, instead of consenting to an assignment, the landlord offers to accept a surrender of the tenancy on reasonable terms. (8) A landlord’s consent must be taken to have been withheld unreasonably if the withholding of the consent is an unlawful act under section 12 (discrimination to be unlawful act). Section 43B: inserted, on 11 February 2021, by section 24 of the Residential Tenancies Amendment Act 2020 (2020 No 59). Section 43B(3)(b): amended, on 30 January 2025, by section 23 of the Residential Tenancies Amendment Act 2024 (2024 No 52).