Yes you can. Amendments to your travel booking can be made subject to availability, as long as they are completed before the expiry of the ticket (before midnight on the current date of travel). With most bookings you can now do this
using the password which was in your emailed booking confirmation. However, if you paid for all or part of your booking using Tesco travel vouchers, you will need to arrange this by calling us on 08443 35 35 35.