The Local Authorities (Referendums) (Petitions and Directions) (Wales) Regulations 2001 (as amended) prohibit an authority from incurring any expenditure to:
Rheoliadau Awdurdodau Lleol (Trefniadau Gweithrediaeth) (Penderfyniadau, Dogfennau a Chyfarfodydd) (Cymru) (Diwygio) 2021