<Tr> <Th> Variations </Th> <Td> New Johnston Johnston Delf Smith Johnston 100 P22 Underground ITC Johnston </Td> </Tr> <Tr> <Th> Also known as </Th> <Td> Underground, Johnston's Railway Type </Td> </Tr> <P> Johnston (or Johnston Sans) is a sans - serif typeface designed by and named after Edward Johnston . The typeface was commissioned in 1913 by Frank Pick, commercial manager of the Underground Electric Railways Company of London (also known as' The Underground Group'), as part of his plan to strengthen the company's corporate identity . Johnston was originally created for printing (with a planned height of 1 inch or 2.5 cm), but it rapidly became used for the enamel station signs of the Underground system as well . </P> <P> It has been the corporate font of public transport in London since the foundation of the London Passenger Transport Board in 1933, and of predecessor companies since its introduction in 1916, making its use one of the world's longest - lasting examples of corporate branding . It remains a copyrighted property of the LPTB's successor, Transport for London . </P>

What font is used for london underground signs