Getting the Travelcard included will be cheaper in all instances except

If you have an Oyster card and are only going to do straight into South Bermondsey and straight out again, not breaking up your journey for a pub stop in Central London. Then it would cost ?4.60,

The Travelcard costs ?6 on top of the Cambridge to King's X fare and gives you unlimited 1-6 zone day travel, without the need for an Oyster card - sounds like this as what you want.

Posted By: Yellalee, Feb 18, 17:53:03