56.—(1) On the completion of the counting at a contested election the returning officer must seal up in separate packets the counted and rejected ballot papers, including ballot papers rejected in part.
(2) The returning officer must not open the sealed packets of—
(a)tendered ballot papers,
(b)the completed corresponding number lists,
(c)certificates as to employment on duty on the day of the poll, or
(d)marked copies of the register of electors (including any marked copy notices issued under section 13B(3B) or (3D) of the 1983 Act) and lists of proxies.