The law on disclosable pecuniary interest

What happens if I don’t follow the rules on disclosable pecuniary interests?

It is a criminal offence if, without a reasonable excuse, you fail to tell the monitoring officer about your disclosable pecuniary interests, either for inclusion on the register if you are a newly elected, co-opted or appointed member, or to update the register if you are re- elected or re-appointed, or when you become aware of a disclosable pecuniary interest which is not recorded in the register but which relates to any matter;

– that will be or is being considered at a meeting where you are present, or
– on which you are acting alone.

It is also a criminal offence to knowingly or recklessly provide false or misleading information, or to participate in the business of your authority where that business involves a disclosable pecuniary interest. It is also a criminal offence to continue working on a matter which can be discharged by a single member and in which you have a disclosable pecuniary interest.

If you are found guilty of such a criminal offence, you can be fined up to £5,000 and disqualified from holding office as a councillor for up to five years.”

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/240134/Openness_and_transparency_on_personal_interests.pdf