Question: When was the British multinational public limited company which has a large presence in Aerospace industry in the United Kingdom incorporated? 
Context: In a limited company, the liability of members or subscribers of the company is limited to what they have invested or guaranteed to the company.  Limited companies may be limited by shares or by guarantee.  The former may be further divided in public companies and private companies.  Who may become a member of a private limited company is restricted by law and by the company's rules.  In contrast, anyone may buy shares in a public limited company. A public limited company (legally abbreviated to plc) is a type of public company under the United Kingdom company law, some Commonwealth jurisdictions, and the Republic of Ireland.  It is a limited liability company whose shares may be freely sold and traded to the public (although a plc may also be privately held, often by another plc), with a minimum share capital of £50,000 and usually with the letters PLC after its name.  Similar companies in the United States are called "publicly traded companies".  Public limited companies will also have a separate legal identity. Mahindra Lifespace Developers Ltd. (formerly Mahindra Gesco Developers Limited) is a wholly owned subsidiary of Mahindra & Mahindra Ltd. GESCO Corporation Limited was incorporated as a Private Limited Company on March 16, 1999 which was converted to a Public Limited Company on August 18, 1999.  GESCO became a subsidiary of Mahindra & Mahindra in 2001. Rolls-Royce Holdings plc is a British multinational public limited company incorporated in February 2011 that owns Rolls-Royce, a business established in 1904 and today designs, manufactures and distributes power systems for aviation and other industries.  Rolls-Royce is the world’s second-largest maker of aircraft engines and has major businesses in the marine propulsion and energy sectors.  All of its shares are tradeable on the London Stock Exchange and other markets. The Bihar State Road Development Corporation Limited, (abbreviated BSRDC), is an Indian Public limited company fully owned by Government of Bihar.  BSRDC was established on April 20, 2009 and incorporated as a public limited company under the Companies Act 1956 on February 17, 2009.  This Company was established to promote surface infrastructure by taking up Road Works, Bridges etc., and to improve road network by taking up construction widening and strengthening of roads, construction of bridges, maintenance of roads etc. in state of Bihar. Dhaka Electric Supply Company Limited, commonly known as DESCO, is a Public Limited Company which distributes electricity at the Northern parts of Dhaka City and Tongi Town of Gazipur District.  The company was created on November 1996 under the Companies Act 1994 as a Public Limited Company.  The company is now under the Power Division of the Bangladesh Ministry of Power, Energy and Mineral Resources and serving a total number of 604,304 consumers as of 31 December 2013. The Maharashtra State Road Development Corporation Limited, commonly abbreviated as MSRDC, is an Indian Public limited company fully owned by the Government of Maharashtra.  MSRDC was established on July 9, 1996 and incorporated as a public limited company under the Companies Act 1956 on August 2, 1996.  It is responsible for developing, building and maintaining roads in Maharashtra. A private company limited by shares is a class of private limited company incorporated under the laws of England and Wales, Scotland, certain Commonwealth countries, and the Republic of Ireland.  It has shareholders with limited liability and its shares may not be offered to the general public, unlike those of a public limited company (plc). Sui Northern Gas Pipelines Limited (SNGPL) was incorporated as a private limited Company in 1963 and converted into a public limited company in January 1964 under the Companies Act 1913, now Companies Ordinance 1984, and is listed on all the three Stock Exchanges of the Country. The aerospace industry of the United Kingdom is the fourth-largest national aerospace industry in the world and the third largest in Europe, with a global market share of 6.4% in 2016.  In 2013, the industry employed 84,000 people.  Domestic companies with a large presence in the British aerospace industry include BAE Systems (the world's third-largest defence contractor), Britten-Norman, Cobham, GKN, Hybrid Air Vehicles, Meggitt, QinetiQ, Rolls Royce (the world's second-largest maker of defence aero engines) and Ultra Electronics.  Foreign companies with a major presence include Boeing, Bombardier, Airbus (including its Astrium, Cassidian and Surrey Satellite Technology subsidiaries), Leonardo (including its AgustaWestland and Selex ES subsidiaries), General Electric (including its GE Aviation Systems subsidiary), Lockheed Martin, MBDA (37.5% owned by BAE Systems), Safran (including its Messier-Dowty and Turbomeca subsidiaries) and Thales Group (including its UK-based Thales Air Defence, Thales Avionics and Thales Optronics subsidiaries).  Current manned aircraft in which the British aerospace industry has a major role include the AgustaWestland AW101, AgustaWestland AW159, Airbus A320 family, Airbus A330, Airbus A340, Airbus A380, Airbus A400M, BAE Hawk, Boeing 767, Boeing 777, Boeing 787, Bombardier CRJ700, Bombardier CSeries, Bombardier Learjet 85, Britten-Norman Defender, Britten-Norman Islander, Eurofighter Typhoon, Hawker 800, Lockheed Martin C-130J Super Hercules and Lockheed Martin F-35 Lightning II.  Current unmanned aerial vehicles in which the British aerospace industry has a major role include BAE Taranis, HAV 304 Airlander 10, QinetiQ Zephyr and Watchkeeper WK450.
Answer: February 2011