The code states that, on appointment to each new office, ministers must provide their permanent secretary with a full list of all interests which might be thought to give rise to a conflict – including the interests of their spouse, partner or close family.
Article source: https://www.huffingtonpost.co.uk/entry/12-key-questions-rishi-sunak-wife-non-dom-status_uk_624ee978e4b0587dee73ca22