United Kingdom - 2009 Party Finance Law

Part Part 7: Referendums
Title Section 111: Referendum expenses
Chapter Chapter 2: Financial controls
Section Referendum expenses
Article

111

(1)The following provisions have effect for the purposes of this Part.
(2)"Referendum expenses", in relation to a referendum to which this Part applies, means expenses incurred by or on behalf of any individual or body which are expenses falling within Part I of Schedule 13 and incurred for referendum purposes.
(3)"For referendum purposes" means-
(a)in connection with the conduct or management of any campaign conducted with a view to promoting or procuring a particular outcome in relation to any question asked in the referendum, or
(b)otherwise in connection with promoting or procuring any such outcome.
(4)"Referendum campaign" means a campaign such as is mentioned in subsection (3)(a); and "campaign organiser", in relation to referendum expenses, means the individual or body by whom or on whose behalf the expenses are incurred.

Categories - Party finance (Expenditures)
Source http://www.legislation.gov.uk/ukpga/2000/41