Shortly before his twentieth birthday, Wilhelm Siemens arrived in the UK. He soon struck his first business deal by selling a patent for a unique electroplating process.
Werner Siemens improved the Pointer Telegraph invented by the Englishman Charles Wheatstone by electrically synchronising the transmitter and the receiver.
The Siemens & Halske Company was founded in Berlin by Johann Georg Halske. Wilhelm acted as the company's agent in the UK.
Wilhelm Siemens took over Siemens & Halske's agency in London.
The water meter was presented to the public at the Great Exhibition of 1851, to enable more efficient and less wasteful water distribution to the UK's ever-growing towns.
Wilhelm took over the running of the UK business, which primarily involved the selling of water meters.
Siemens' UK subsidiary was set up under the leadership of Wilhelm Siemens. The Londoner agency was converted into an independent company known as Siemens, Halske & Co. with its own workshops.
Wilhelm married a Scot, Anne Gordon and on the day of his engagement he took British citizenship and changed his name from Carl Wilhelm to Charles William Siemens.
Siemens opened its first UK factory in Woolwich, south London, to produce submarine cables.
The company was renamed Siemens Brothers.
Werner von Siemens discovered the dynamo-electric principle and thus enabled electricity to be put to practical use. Its invention laid the foundation for today's world of electrical engineering.
An early player in telecommunications, Siemens laid the Indo-European telegraph link. Running for nearly 7,000 miles, the London to Calcutta line cut the time required for a message to travel between the two cities from many days to just 28 minutes.
Using 'Faraday', the ship specially designed by William Siemens, the company laid the first telegraph cable from Ireland to the USA, enabling transatlantic telecommunications.
William Siemens addressed, as president, the Iron and Steel Institute and urged better use of natural resources describing the waste of material as 'perhaps the greatest source of waste among us.'
Siemens Brothers was converted into a stock company.
Siemens provided the first electric lighting in a British theatre - London's Savoy Theatre. Siemens dynamo machines powered the internal lights.
William Siemens, one of the first environmentalists, was greatly concerned about waste and pollution. In this year he gave a lecture in which he declared: "The point at which science and arts should be directed chiefly is the prevention of waste. In doing so we should vastly increase not only our national resources but our individual well-being."
To help local businesses transport heavy machinery, Siemens completed a six-and-a-half mile single-track line from Portrush to Bush Mills in Ireland. Probably the first electric train contract in the world, its power originated from a waterfall that drove a Siemens dynamo.
William Siemens was knighted by Queen Victoria for services to science. He died Sir William Siemens, a few months later and is buried in Kensal Green cemetery in London.
The building of a new factory began in Stafford. The new site, which started operating two years later, produced dynamos.
Siemens Brothers Dynamo Works Ltd., London and Stafford, was founded.
After the successful introduction of the tantalum lamp in Germany, a factory opened in Dalston, London, to produce and market the bulb in UK.
Siemens built the world's first set of traffic lights at Berlin's Potsdamer Platz. Today, Siemens manufactures and maintains more of the UK's traffic infrastructure than any other company from a factory in Poole.
The Siemens Electronic Switching Laboratory began, in co-operation with, amongst others, the Post Office, to design and build a model electronic telephone exchange.
A Siemens sales company was founded under the name Siemens Ltd.
Having been involved in medical engineering since before World War II, Siemens consolidated its position in the UK with the acquisition of its agent, Sierex Ltd.
Siemens was behind the first 1MB memory chip to go into production. All major UK computer manufacturers quickly adopted the new chip.
The Plessey Company was taken over jointly by Siemens and GEC; Siemens took over the research centre Roke Manor Research; a controlling stake in Oxford Magnet Technology was acquired.
Siemens was behind the first GSM mobile phone with colour display.
Siemens and Fujitsu joined forces with a goal to establish Fujitsu Siemens Computers, a joint venture company that has since become one of the world's leading computer suppliers.
Siemens developed Hawk-Eye, innovative image-processing technology, bringing major benefits to sports such as Cricket and Tennis.
Siemens won its biggest ever contract in the UK - a £1 billion order to provide its new Desiro electric trains to Stagecoach Group and Angel Trains for the South West Trains network.
In the biggest modernisation program in the UK, Siemens won an order for the periodic delivery of medical systems for both the Barts and Royal London hospitals.
Siemens relocated its UK headquarters from Bracknell to Sir William Siemens Square in Frimley, Surrey. Drax signed a contract with Siemens for £100 Million Turbine upgrade.
In London, Siemens and McKinsey published an influential study on sustainable urban infrastructure.
Siemens Healthcare Diagnostics invested in Wales, creating 250 new skilled manufacturing jobs in Llanberis.
Siemens announced that as well as the turbines, it would also provide grid access for the world's largest offshore wind farm - London Array.
Siemens opened its UK Wind Power Research Centre at the University of Sheffield.
Siemens received the go ahead for £30m landmark London sustainability centre. Siemens won double honours at 2010 Best Factory Awards.
Siemens was selected as preferred bidder for Thameslink Rolling Stock.
Siemens opened the Crystal in London, a global centre of competence in city technologies and a visitor attraction, open to the public.
HRH Princess Royal opened a new Engineering school in Lincoln, developed by Siemens and the University of Lincoln.
Siemens acquired Marine Current Turbines Ltd. and the Connectors and Measurement Division of Expro Holdings UK, manufacturers of subsea components.
Siemens sponsors Poster Art 150 to celebrate 150 years of the London Underground, as well as marking Siemens’ own 170 years in the UK.Siemens Poster Vote
Today, Siemens employs more than 13,500 people across all regions of the country, 8,000 of them are in engineering and manufacturing roles.Siemens UK Today