to 12,000 employees and is one of the major players in the British aerospace industry. QinetiQ's main aerospace business relates to satellites, UAVs and reconnaissance systems. Rolls-Royce The UK-headquartered Rolls-Royce Group is the world's second-largest maker of aircraft engines (behind General Electric). It has over 50,000 employees, of whom about 23,000 are based in the United Kingdom. In 2014, Rolls-Royce purchased the 50% Daimler had in the R-R engine business, paying 2'430 million € for it. The company's main UK factories are at Derby and Bristol. In Derby, the three shaft Trent engines get developed and produced. The current line up includes the Trent 700 for the Airbus A330, the Trent 900 for the Airbus A380, the Trent 1000 for the Boeing 787 and the Trent XWB for the Airbus A350 XWB, among others. In Bristol, the company has concentrated its military aerospace business with the British final assembly line for the EJ200 engine for the Eurofighter Typhoon, the only final assembly line for the British-French Adour engine and other programmes, such as significant parts of the workshare, in the TP400 turboprop engine for the A400M and the F136 engine for the F-35 Lightning II. Recently, Bristol has also been confirmed as the centre for the development and testing of the civil RB282 engine, which will, however, be produced in Virginia. Rolls-Royce's main locations are at Derby, Bristol, Hucknall, Barnoldswick/Burnley, Inchinnan. Safran Safran's operations include its Messier-Dowty and Turbomeca subsidiaries. Leonardo MW Leonardo MW is a Leonardo company. The company has a workforce of approximately 17,000 and total revenues in excess of €3.5 billion. Alongside core operations in Italy and the UK, the company trades in the United States, Germany, Turkey, Romania, Brazil, Saudi Arabia and India. Surrey Satellite Technology Surrey Satellite Technology is a small satellite development and production company. It currently has c.600 employees and is the world leader in small satellites. In its 22-year history, it has developed satellites for 27 missions. The two Galileo satellite navigation proofing satellites, GIOVE-A and GIOVE-A2, are two of their better-known satellites. Originally a spin-out company from the University of Surrey, Surrey Satellite Technology is now 99% owned by the Airbus Defence and Space division of Airbus. Thales Group Thales Group including its UK-based Thales Air Defence, Thales Avionics and Thales Optronics subsidiaries has capabilities including avionics, UAVs, simulation. See also List of aircraft manufacturers References External links SBAC official website