220.Sections 120 to 124 require a permitted participant which has incurred referendum expenses during any referendum period to make a return to the Electoral Commission as to those expenses. The requirements as to the content, auditing and submission of such a return are similar to those in sections  96 to 100 governing returns as to controlled election expenditure by third parties. In addition to detailing payments made in respect of referendum expenses, returns by permitted participants (other than registered parties) must also record relevant donations accepted for the purpose of meeting referendum expenses.
Commentary on Sections Part VII : Referendums Sections 120 to 124 : Returns