In 1850 he established the London sales office of Siemens & Halske, the engineering company producing telegraphs, which his brother Werner had founded in 1847 at Berlin. He started selling such devices to the wire rope producer R. S. Newall and Company in Dundee, of which his friend (and uncle of his later wife) Lewis Gordon was the co-owner. Newall & Co. also outsourced test jobs for cables to Siemens and such enabled the new company to enter the ocean cable-laying business. The branch office became Siemens Brothers in 1858. In the 1850s, the company was involved in building long distance telegraph networks in Russia. In 1855, a company branch headed by another brother, Carl Heinrich von Siemens, opened in St Petersburg, Russia. By 1863, Sir William had his own cable factory built at Charlton, London. In 1867, Siemens completed the monumental Indo-European (Calcutta to London) telegraph line.
in 1850 he established the london sales office of siemens & halske the engineering company producing telegraphs which his brother werner had founded in 1847 at berlin he started selling such devices to the wire rope producer r s newall and company in dundee of which his friend (and uncle of his later wife) lewis gordon was the co-owner newall & co also outsourced test jobs for cables to siemens and such enabled the new company to enter the ocean cable-laying business the branch office became siemens brothers in 1858 in the 1850s the company was involved in building long distance telegraph networks in russia in 1855 a company branch headed by another brother carl heinrich von siemens opened in st petersburg russia by 1863 sir william had his own cable factory built at charlton london in 1867 siemens completed the monumental indo-european (calcutta to london) telegraph line