Nothing I have seen dictates inspection frequencies. Guidance note 4 and the draft enforcers guidance specifically state that individual Brigades should target their inspections at high risk premises, taking into account not only the inherent risk of occupancy type, size, etc determined by the risk rating, but also the management compliance level determined by section B of the form. Brigades will therefore lay out an inspection programme in this manner but can only do this with the available resources.
My Brigade has started a process as above which will give, for example, a hotel that scores highly on the risk rating and also highly on the management compliance a reinspection frequency of 12, 6 or even 3 months. Alternatively, a low scoring hotel on both counts may well attract a reinspection of 60 months.
For lower risk premises such as offices shops etc, if audits are carried out and the scores are low enough, they may never be visited again as in practice, we will never have the resources to inspect every premises.