Really helpful comments as always – thanks evryone! – below confirmation from Chris Edwards, our Electrical Technical Safety Manager –
The Landlord and Tenant Act places an obligation on the landlord to demonstrate that they have provided a property that is fit for human habitation at the beginning of a tenancy, and this is the main driver for voids to be automatically tested
Best practice ,ref the Landlord and Tenants Act, indicates an EICR should be completed in these circumstances to demonstrate condition and resetting the date for the cyclical EICR.
NB BS7671 states that a minor works cert is intended to be used for additions and alterations to an installation that do not extend to the provision of a new circuit. Therefore the above outlined work should be completed on an Electrical Installation Certificate.