The Association of Train Operating Companies (ATOC) has confirmed that plans are still on track to extend the use of London's Oyster contactless rail payment card to all rail companies operating in the capital within the next two years.
ATOC said the plan had been under consideration for several years and rail firms were all committed in principle to reaching an agreement, which would see Oyster pay-as-you-go cards accepted by all rail companies across London.
The association said talks were ongoing to reach the specifics of the agreement and the rail companies were aiming to achieve an integrated smartcard payment system for London's transport by 2009.
The extended system will enable passengers to move easily between rail, Tube, Docklands Light Rail, tram and bus using an Oyster card.
When Transport for London's (Tfl) Overground service starts on 11 November, passengers will be able to use Oyster cards across all 54 North London Railway's stations.
To promote the installation of Oyster card readers at all 250 rail stations in London to meet the 2009 target, Tfl has offered to pay for the necessary equipment. Rail companies have until 19 October to accept this offer.
The spokesman said Chiltern has already signed up to the deal. Although c2c and ONE have indicated their acceptance of the offer, they have yet to sign the agreement.