London Underground

==1908–1919==
===1908–1913===
Prior to the unification of branding in 1908, each individual operating company had its own branding and logo. Thus there was no definitive 'London Underground' logo during this period.
In 1908, the individual companies operating the London Underground at the time agreed upon a unified branding design, the central element being the then new 'Underground' name and logo.
===1913–1919===
==1919–1949==
===1919–1933===
Due to the technical restrictions of the time, this roundel could be seen in various dimensions depending on its application.
===1933===
The letters LPTB (London Passenger Transport Board) were added to the roundel in 1933.
===1933–1949===
The words 'London Transport' were added onto the roundel in 1933.
==1949–1958==
===1949–1951===
In 1949 "London Transport" was removed from the logo, and the name was changed to "RAILWAYS".
===1951–1958===
In 1951, the outlining was removed.
==1958–present==
===1958–1969===
===1969–1972===
In 1969, the letters were changed to be uniform in height.
===1972–1985===
*Design Research Unit
===1985–present===
VictoriaLineUndergroundroundelsmall.png|Special Victoria Line roundel used in 1969 to celebrate the opening of the line. This would be used again in 2011 to mark the end of the lines original 1967 rolling stock. 
150th anniversary London Underground.svg|Logo used for the 150th anniversary of the London Underground in 2013.
London Underground triangle PS5.svg|Triangle version used for PlayStation 5 promotions in November 2020
London Underground X PS5.svg|X version used for PlayStation 5 promotions in November 2020
London Underground square PS5.svg|Square version used for PlayStation 5 promotions in November 2020
LU 160.webp|Logo used for the 160th anniversary of the London Underground in 2023.
In 1985, the traditional red and blue roundel was brought back into use. This time it has been modified so the circle and bar strokes are the same width. The colours have also been brightened.
*Henrion, Ludlow and Schmidt
Category:London
Category:Transport
Category:Rail transport
Category:Travel
Category:Travel companies in the United Kingdom
Category:Transport for London
Category:1863
Category:1860s
Category:United Kingdom
Category:Metro systems in the United Kingdom