You can redeem your National Rail Days Out voucher online by visiting the Days Out Guide Website.
Please follow the instructions to complete your booking for the London Eye. On the day of your visit, you will need to present your train tickets, booking reference number and payment card to fully redeem the offer.
For train ticket validity information, please visit the 'Is My Ticket Valid For 1/3 Off?' help page
For full FAQS and Terms and Conditions, please visit https://www.daysoutguide.co.uk/faqs