Balfour Beatty plc (LSE: BBY) is a British construction, engineering, military housing, rail and investment services company. It is one of the largest construction companies in the UK, and the 15th largest in the world. It is a constituent of the FTSE 250 Index.

Balfour Beatty works for customers principally in the UK, the US, South-East Asia, Australia and the Middle East.

Balfour Beatty was founded in 1909 by George Balfour, a Scottish mechanical engineer, and Andrew Beatty, an English chartered accountant: they described the company as "general and electrical engineers, contractors, operating managers for tramways, railways and lighting properties and for the promoting of new enterprises" and soon it expanded into civil engineering. In 1922 George Balfour and Andrew Beatty established Power Securities to develop and fund hydro-electric projects. By the 1924 the business was operating internationally.

Source: Wikipedia