If there is a queue at the ticket office, can I still board the train without a valid ticket?

No, it is your responsibility to allow yourself enough time to purchase a ticket before travelling. Automatic self-service ticket machines are provided at the majority of c2c stations as an additional method of purchase and tickets can also be bought in advance of travel from ticket offices, the tele-sales office on 08457 44 44 22 or via our online booking section.