189.In order to ensure proper observance of the limits on controlled expenditure by third parties, sections 90 and 91 require that all such expenditure, and any payment in respect of such expenditure, must be authorised or made by the responsible person or a person authorised in writing by him. Similarly, section 92 requires that any claim for payment in respect of campaign expenditure must be sent to the responsible person or other authorised person. These provisions (and section 93, which provides for disputed claims) are similar to the provisions in Part II of the Representation of the People Act 1983 concerning election expenditure by candidates and their agents.
Commentary on Sections Part VI : Controls relating to third party national election campaigns Sections 90 to 93 : General restrictions relating to controlled expenditure by recognised third parties