In hipper Shoreditch, small independent stores hawk colourful, one-gear bikes to graphic artists and web designers.

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The 1990s Global Hawk was the size of a small passenger jet.

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Global Hawk can pick out objects as small as a truck with its synthetic aperture radar, which uses the plane's flight path to simulate the curve of a radar dish several hundred meters long.

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One version of the Black Hawk also has the ability to dispense small mines from the air.

BBC: News | In Depth | Military Fact Files

Hawk-Eye was bought by electronics giant Sony in 2011, but remains a relatively small company.

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