Yorke Rosenberg Mardall (Yorke, Rosenberg and Mardall, YRM) was a British architectural firm established by F. R. S. Yorke (1906-1962), Eugene Rosenberg (1907-1990) and Cyril Mardall (Sjöström) (1909-1994) in 1944. The international character of this modernist firm was created by Rosenberg, born in Slovakia and who practised architecture in Prague before the Second World War, and Mardall, born in Finland, as well as by the number of staff from all parts of the world. Their most notable trademark was the use of white ceramic tiles for the treatment of external façades inspired by Le Corbusier's use of tiles on the entrance drum of the Armée de Salut (1929) in Paris and the General Pensions Institute (1929-34) in Prague designed by Josef Havlíček and Karel Honzík and worked on by Rosenberg. Their main field of work was hospitals, schools, colleges, offices and industrial buildings as well as Gatwick airport. In 2011 the company was sold to RMJM.