Travel where ticket is lost, damaged or expired
39.—(1)  If a person is within the paid area —
(a)without a ticket;
(b)with a ticket improperly damaged, altered or interfered with;
(c)with a ticket that has expired; or
(d)with any ticket which he is not entitled to use,
he shall deliver up his ticket (if any) to any authorised person.
(2)  For the purposes of paragraph (1) and regulation 38(2), a ticket shall expire in such circumstances as are provided for in the conditions of use.