Economy of Cambridge

example, 2000 firkins of butter were brought up the river every Monday from the agricultural lands to the North East, particularity Norfolk, to be unloaded in the town for road transportation to London. Changing patterns of retail distribution and the advent of the railways led to a decline in Cambridge's importance as a market town.

Today Cambridge has a diverse economy with strength in sectors such as research & development, software consultancy, high value engineering, creative industries, pharmaceuticals and tourism. Described as one of the "most beautiful cities in the world" by Forbes in 2010, tourism generates over £350 million for the city's economy.

Cambridge and its surrounds are sometimes referred to as Silicon Fen, an allusion to Silicon Valley, because of the density of high-tech businesses and technology incubators that have developed on science parks around the city. Many of these parks and buildings are owned or leased by university colleges, and the companies often have been spun out of the university. Cambridge Science Park, which is the largest commercial R&D centre in Europe, is owned by Trinity College; St John's is the landlord of St John's Innovation Centre. Spinout companies include Abcam, CSR, ARM Limited, CamSemi, Jagex and Sinclair. Microsoft chose to locate its Microsoft Research UK offices in a University of Cambridge technology park, separate from the main Microsoft UK campus in Reading.

Cambridge was also the home of Pye Ltd., founded in 1898 by W. G. Pye, who worked in the Cavendish Laboratory; it began by supplying the University and later specialised in wireless telegraphy equipment, radios, televisions and also defence equipment. Pye Ltd evolved into several other companies including TETRA radio equipment manufacturer Pye Telecommunications. Another major business is Marshall Aerospace located on the eastern edge of the city. The