Marconi House Within this building Marconi's Wireless Telegraph Company Limited operated their famous broadcasting station 2.L.O. from May 11th to November 14th 1922 when it became the first station of the British Broadcasting Company. The first pre-announced broadcast of public entertainment took place two years earlier when Dame Nellie Melba sang from Marconi's Chelmsford Works on June 15th 1920

See also...