My parents are travelling on Eurostar next week. They hold Senior Railcards and I'm intending to purchase tickets to London International CIV for them - EURO STD RETURN tickets such as those shown below: http://www.brfares.com/#faredetail?orig=HLN&dest=LNE&rlc=SRN&rte=1000&tkt=EOR Their Eurostar is due to depart at 11:00 so to avoid cutting things tight for the "check-in" time they'll need to depart before 09:30 - inside what's normally considered to the morning peak from their station - Harlington (Beds). Is their railcard valid to use on this ticket for travel at this time? I see the following when I search online: However, the only website I know of that allows tickets to London International CIV to be purchased online (raileasy.co.uk) allows an itinerary to be priced for travel at 08:00 outwards with a Senior Railcard discount. I want to avoid any hassle for my parents so I'd prefer they have a ticket that won't have a strong possibility of staff suggesting their ticket is invalid.