Transport for London (TfL) said the limited edition cards - which display the message, “20 years shaping life in London” – are available from all Tube stations in Zone 1, as well as visitor centres and selected Oyster ticket stops.
The launch of the Oyster card on 30 June 2003 revolutionised the way passengers paid for London Underground and bus journeys in the capital.
They allowed passengers to add money to a smartcard for pay-as-you-go travel in London for the first time, avoiding the need to queue to buy paper tickets or hand over cash to bus drivers.
Oyster cards led to the introduction of payments by contactless cards and devices in London, as well as pay-as-you-go technology in many cities around the world.
Nearly 17 million Oyster cards were used in the past 12 months.
Image credit: Transport for Lo...