Eurostar connecting trains and tickets.
If you are using Eurostar from St Pancras Internationalyou can purchase a Euro standard ticket from Coulsdon South, CoulsdonTown or any other station to London
International. This has the advantage that it is marked CIV (Convention Internationale pour le transport des Voyageurs).
This has the added advantage that if your connecting train is delayed that Eurostar will have to put you an alternative train at no extra cost. This is particularly useful if you have a reduced price advance ticket. Without the CIV ticket Eurostar has no obligation to honour your ticket if it is for a specified train and you have missed it.
The ticket has two version with the underground £9.0 single and £18.0 return without the underground via Thameslink £6.60 and £13.20 return (it is the same price as ordinary tickets to London). The return portion is also valid for two months so you will not have to queue up at the booking office on your return. Normal discounts for senior and other cards apply if travelling after 9.30 weekdays or at the weekends.
You will need proof of your Eurostar journey to purchase this ticket