TranSys is a consortium of Cubic (37.5%), HP Enterprise Services (37.5%), Fujitsu

Fujitsu

is a Japanese multinational information technology equipment and services company headquartered in Tokyo, Japan. It is the world's third-largest IT services provider measured by revenues....

 (20%) and WS Atkins

WS Atkins PLC

WS Atkins plc is a multinational engineering, design, planning, project management and consulting services company headquartered in Epsom, United Kingdom...

 (5%). It operated the Oyster card

Oyster card

The Oyster card is a form of electronic ticketing used on public transport services within the Greater London area of the United Kingdom. It is promoted by Transport for London and is valid on a number of different travel systems across London including London Underground, buses, the Docklands...

 scheme for Transport for London

Transport for London

Transport for London is the local government body responsible for most aspects of the transport system in Greater London in England. Its role is to implement the transport strategy and to manage transport services across London...

until 2008. The Oyster card system was originally created and maintained via a PFI contract known as Prestige between TfL and TranSys. TranSys was responsible for developing, installing, managing and maintaining London's automated fare collection system including the Oyster card system, on behalf of TfL. The PFI contract was put in place in 1998 for a term of 17 years.
In August 2008, TfL gave notice to terminate the contract with the TranSys consortium, exercising a break option, effective from 16 August 2010