Do I use my contactless Barclays Debit card or Barclaycard in the same way as using an Oyster card?

Yes, just touch your Barclays debit card or Barclaycard on the reader as you board the bus or tram, and at the start and end of your journey on the Tube, DLR, London Overground and National Rail services.

Just remember to make sure you touch in and out with the same contactless card, and only touch one card on the reader, to avoid card clash.