Victoria line - Wikipedia

File:Warren Street tube station, Victoria Line - geograph.org.uk - 4533984.jpg - Wikimedia Commons

File:Finsbury Park tube station, Victoria Line.jpg - Wikipedia

How are new trains put in place for metro lines (particularly those with deep underground tunnels all throughout the line)? - Quora

File:Finsbury Park stn Victoria southbound.JPG - Wikipedia

File:Victoria succession.png - Wikipedia

London Victoria station - Simple English Wikipedia, the free encyclopedia

Victoria Street railway station, Perth - Wikiwand

Victoria Line – Wikipédia

All 15 London Tube lines ridden & ranked in one afternoon

London Underground 1967 Stock - Wikipedia

File:Euston tube stn Victoria line northbound.JPG - Wikipedia