British Rail Class 423 (English Wikipedia)

McCrickard, John P (6 October 2016). "January 1988 to December 1988". Network South East Railway Society. Archived from the original on 28 June 2018. Retrieved 26 June 2018.

barrowmoremrg.co.uk

"Vehicle Diagram Book No.210 for Electrical Multiple Units (including A.P.T.)" (PDF). Barrowmore MRG. BRB Residuary Ltd. ED261, ED262, ED263, EE365, EE366, EE367, EE368, EH376, EH278, EH283. Archived from the original (PDF) on 21 January 2015. Retrieved 22 February 2016.

"Last journey for slam-door train". BBC News. 7 October 2005. Retrieved 1 October 2020.

McCrickard, John P (16 October 2016). "January 1982 to May 1986". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
McCrickard, John P (6 October 2016). "January 1988 to December 1988". Network South East Railway Society. Archived from the original on 28 June 2018. Retrieved 26 June 2018.
McCrickard, John P (6 October 2016). "January 1989 to December 1989". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
McCrickard, John P (6 October 2016). "January 1990 to December 1990". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.

System Data for Mechanical and Electrical Coupling of Rail Vehicles in support of GM/RT2190 (PDF). London: Rail Safety and Standards Board. 22 June 2011. p. 4. SD001. Archived from the original (PDF) on 1 April 2012. Retrieved 22 November 2022.

"A Quick Update…". SETG. 17 January 2024. Retrieved 17 January 2024.
"RealTime Trains Latest Supporter of 4VEP Restoration – Press Release". SETG. 28 April 2021. Retrieved 29 May 2021.

"Vep DTC delivered to Woking Miniature Railway". Archived from the original on 4 February 2016. Retrieved 26 January 2016.

"Vehicle Diagram Book No.210 for Electrical Multiple Units (including A.P.T.)" (PDF). Barrowmore MRG. BRB Residuary Ltd. ED261, ED262, ED263, EE365, EE366, EE367, EE368, EH376, EH278, EH283. Archived from the original (PDF) on 21 January 2015. Retrieved 22 February 2016.
"Class 423". The Railway Centre. Archived from the original on 14 October 2007. Retrieved 23 February 2016.
System Data for Mechanical and Electrical Coupling of Rail Vehicles in support of GM/RT2190 (PDF). London: Rail Safety and Standards Board. 22 June 2011. p. 4. SD001. Archived from the original (PDF) on 1 April 2012. Retrieved 22 November 2022.
McCrickard, John P (16 October 2016). "January 1982 to May 1986". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
McCrickard, John P (6 October 2016). "January 1989 to December 1989". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
McCrickard, John P (6 October 2016). "January 1990 to December 1990". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
"Vep DTC delivered to Woking Miniature Railway". Archived from the original on 4 February 2016. Retrieved 26 January 2016.

Longworth 2015, pp. 80–83, 138–143, 163, 165–168, 189–193, 195–196, 198 Longworth, Hugh (2015). British Railways Electric Multiple Units to 1975. Oxford Publishing Co. ISBN 9780860936688. OCLC 923205678.
Fox 1987, pp. 70–72, 81–82 Fox, Peter (1987). Multiple Unit Pocket Book. British Railways Pocket Book No.2 (Summer/Autumn 1987 ed.). Platform 5 Publishing Ltd. ISBN 0906579740. OCLC 613347580.