history Manufacturing companies established in 1934 Defunct aircraft manufacturers of the United Kingdom Former defence companies of the United Kingdom Manufacturing companies of the United Kingdom Manufacturing companies of Australia Manufacturing companies based in London Companies formerly listed on the London Stock Exchange Manufacturing companies disestablished in 1992 Defunct helicopter manufacturers of the United Kingdom History of the Royal Borough of Kingston upon Thames 1977 mergers and acquisitions British companies established in 1934 British companies disestablished in 1992