References
- UK Parliament. High Speed Rail (London - West Midlands) Act. London: UK Parliament, 2017.
- HS2 Ltd. London West Midlands Environmental Statement Volume 2 | Community Forum Area Report CFA7 | Colne Valley. London: Department for Transport, November 2013.
- HS2 Ltd. HS2 Phase one register of undertaking and assurances. London: Department for Transport, 2013.
- House of Commons. Second special report of session 2015-16 - High Speed Rail (London - West Midlands) Act. London: House of Commons, 2016. p. 50.
- HS2 Ltd. C227-ATK-ST-REP-000-000011: CVV Specimen Design. London: HS2 Ltd, 26 April 2017.