Subsection (1) enables the Secretary of State to prepare and publish additional sets of rules applicable to specific DVS use cases that supplement the trust framework. Subsection (2) notes that such published sets of rules will be called ‘supplementary codes’.
	Subsection (3) sets out that supplementary codes may include rules relating to the provision of services and to the conduct of a person providing such services. This subsection also clarifies that references in this Part to a person providing services in accordance with a supplementary code (or similarly expressed) include compliance with the rules contained in the supplementary code relating to that person and/or their conduct.
	Subsection (4) requires the Secretary of State to consult the Information Commissioner and any persons the Secretary of State considers appropriate to consult when preparing supplementary codes. Subsection (5) sets out that this consultation can take place before this section comes into force.
	Subsection (6) enables the Secretary of State to revise and republish supplementary codes following a review under section 31, or at other suitable times.
	Subsection (7) sets out that a supplementary code or a revised version of a supplementary code must state when it will come into force, and this cannot be before the relevant supplementary code is published. Subsection (8) states that a supplementary code or a revised version of a supplementary code can set different rules for different digital verification services, can specify that provisions come into force at different times for different purposes, and can include transitional or saving provisions.
	Subsections (9) to (11) set out that when a supplementary code is revised, provisions in the revised and republished supplementary code can specify that from a particular date or from the end of a period, certificates that were issued to organisations confirming they provide services in accordance with the relevant supplementary code before the changes come into force (pre-revision certificates) do not count for specified purposes. Such provisions may specify different terms for different pre-revision certificates.
Part 2: Digital Verification Services DVS trust framework and supplementary codes Section 29: Supplementary codes