56. Which institution(s) is responsible for examining financial reports and/or investigating violations?

57. (1) Where on an application under section 56 it appears to the Court that any person who is or has been an election agent has refused or failed to make a return, or to supply the particulars as will enable the candidate and his election agent respectively to comply with the provisions of this Act as to the return or declarations as to election expenses, the Court, before making an Order under the section, shall order that person to attend before the Court.

(2) The Court shall, on the attendance of that person unless he shows cause to the contrary, order him to make the return and declarations or to deliver a statement of the particulars required to be contained in the return as to the Court seems just, within such time, to such persons and in such manner as the Court may direct, or may order him to be examined with respect to the particulars.

Source: Article 57, Representation of the People Act, 1967 (updated 2015)

Only reports from candidates.

There are no regulations regarding the political parties' reporting.