I have an advance return York - London for 13 July out on the 06.58 and returning on the 17.00. Outward cost £95 and return £111. It was paid for by work. It's now of no use to work as the reason for travelling to London has been cancelled. So I see myself having a ticket "potentially" worth £206 but it could be worth nothing. I don't have any other journey's to London needed or likely opportunities to use it yet before 28 September so can't change to use on another day. Another opportunity to travel to London may come up but I don't know the dates so can't change the ticket yet. Any thoughts?