§ Chris Grayling
To ask the Secretary of State for Transport what assessment he has made of the cost of infrastructure investment in the railways(a) before and (b) since privatisation. 
§ Mr. Jamieson
No direct comparison can be made between investment before and after privatisation due to the different nature of individual projects and the externalisation of costs (such as possessions and the cost of capital) that were previously internalised under British Rail.811W
The Rail Regulator sets out the expected cost of infrastructure investment through the periodic review process.