I have a Travelcard which can be used from zone 3-5 including buses anywhere on the TFL network including central london,trains and tube.
Valid upto and including 29th.
You can pick it up in croydon on friday afternoon or at euston station before 7.20am on saturday 28th.
Please note I wont be able to post it and if you require picking up anywhere else I will within reason.
Text/Ring if youve got any questions.
Alex