Councillors must declare all financial and non-financial interests, including the interests of persons related to the councillor (including spouses, dependent children or anyone whose affairs are so closely connected with the councillor that they could share any benefits received).
Each local government's chief executive officer must keep a register of the interests of each councillor and their related persons.
All councillors must ensure that their registers of interests and those of all related persons are accurate and up-to-date at all times. The relevant approved forms can be accessed here.
A councillor who fails to update any of the registers of interests for themselves or their related persons may be guilty of an offence.
Any member of the public can inspect councillors' registers of interest at the local government office or on the local government's website - see the local government directory.