Question to the Department for Transport:

To ask the Secretary of State for Transport, with reference to the Answer of 19 April 2021 to Questions 178622, 178623 and 178626, how many of the 1,110 miles of track were the (a) Government and (b) devolved Administrations responsible for.

Network Rail publish scheme by scheme data on electrification projects in table 66 of their annual return, which is available at https://www.networkrail.co.uk/who-we-are/publications-and-resources/regulatory-and-licensing/annual-return/

331 of those miles of electrification took place in Scotland, which the Scottish Government was responsible for. The remaining miles of electrification took place in England and Wales, which the UK Government was responsible for.