Passenger Transport (General) Regulation 2017

A ticket for a public passenger service or rail passenger service is valid for travel—

only for the journey or journeys for which it is issued or in the zone or area for which it is issued, and

in the case of a ticket that is issued for use on a particular day or days or for a particular period, only on the relevant day or days or during the relevant period, and

in the case of a ticket showing the name of the person to whom it was issued—only by that person.

A ticket is not valid if—

it is transferred in contravention of this Division, or

it has been defaced, mutilated or altered, or

any of the following information on the ticket is illegible—

the number of the ticket,

the issue date or the expiry date (or both) of the ticket,

the names of bus stops, stations or light rail stops between which (or the zone or area within which) the ticket authorises travel,

the name (if shown) of the person to whom the ticket was issued.

However, an illegible, defaced, mutilated or altered ticket is valid if the illegibility, defacing, mutilation or alteration occurred as a result of the ordinary use of the ticket.