Rolling stock leasing companies (ROSCOs) own most of the coaches, locomotives and freight wagons on the rails, which they hire out to train and freight operating companies.
ROSCOs have replaced many of the older trains that were being used before privatisation with modern vehicles. They are often responsible for the maintenance and rebuilding of the vehicles they hire out.
- Angel Trains Ltd
- Beacon Rail
- Caledonian Rail Leasing
- Eversholt Rail Group
- Halifax Asset Finance
- Macquarie European Rail
- Lombard North Central
- Porterbrook Leasing Company Ltd
These companies build the current passenger trains in Britain: