QW Rail Leasing is a (ROSCO) formed in 2008 to fund the purchase of in the United Kingdom, which would then be leased to train operating companies (TOCs). The company was formed as a joint venture between the National Australia Bank and SMBC Leasing and Finance, with its first major leasing deal coming with Transport for London to fund the £300 million purchase of 57 Class 378 "Capitalstar" electric multiple units for London Overground.