129.Section 31 requires a member of a relevant authority to disclose a disclosable pecuniary interest that they are aware of (apart from a sensitive interest – see section 32), at a meeting or if acting alone, where any matter to be considered relates to their interest. If the interest is not already registered, it requires members to register it within 28 days. The monitoring officer must then enter the interest in the authority’s register. It prohibits a member from participating in discussion or voting on any matter relating to their interest or, if acting alone, from taking any steps in relation to the matter (subject to any dispensations – see section 33). Local authorities may also, should they so wish, amend their standing orders to require a member to leave the room when a matter in which they have a disclosable pecuniary interest is debated or voted on.