About a month ago I traveled to London with my T-Mobile iPhone and was very dissapointed to find that neither of my US based cards worked... neither Corporate Amex Platinum nor my Presidential Plus Visa from Chase worked with Apple Pay for the London Underground (Tube). Apple pay worked brilliantly in all the stores, but no go for the underground. I kept getting a rejection error 67 "card not accepted." I called Amex and Chase but beyond putting the travel notice on my account they couldn't do anything.

Fast forward to today. I just landed here in London with my new Android Phone (Nexus 6P on Project FI). Same thing:
1. Step off the Heathrow Express @ Paddington Staiton... try the oyster reader at the underground and neither my Amex nor my Chase Visa will take... same exact error message. I had hoped maybe Android Pay would work where apple failed.

I don't have any other Credit cards to try unfortunately... has anyone figured out a workaround for this?

I ended up buying an Oyster card but am very annoyed by this situation.