Condensed. After the typeface was digitized in 1981–82, New Johnston finally became ready for Linotron photo-typesetting machine, and first appeared in London's Underground stations in 1983. It has been the official typeface exclusively used by Transport for London and The Mayor of London ever since, with minor updates to specific letterforms occurring in 1990–1992 and 2008. A new version, known as Johnston 100, was commissioned by Transport for London from Monotype in 2016 to commemorate the 100th anniversary of the introduction of the typeface, and was designed to be closer to the original version of the Johnston typeface. Advertising bans In May 2019, TfL banned advertising from Saudi Arabia, Pakistan and the United Arab Emirates due to their poor human rights records. This brought the number of countries to 11 from which TfL has banned adverts, due to them having the death penalty for homosexuals. Countries previously banned from advertising were Iran, Nigeria, Saudi Arabia, Somalia, Sudan and Yemen. In 2019, the Mayor of London, Sadiq Khan, introduced restrictions on advertising of unhealthy food and drinks across the TfL network. A study estimated that this led to a 7% reduction in the average weekly household purchase of foods high in fat, salt, and sugar. The largest reductions were seen in the sales of chocolate and sweets. There was no change in purchases of foods not classified as being high in fat, salt, and sugar. See also Articulated buses in London Passenger transport executive Selective vehicle detection Transport in London Notes References External links London TravelWatch Local government in London Transport authorities in London Public transport executives in the United Kingdom Companies owned by municipalities of England Greater London Authority functional bodies 2000 establishments in England 2000 in London Transport organisations based in London