<P> After World War I the firm was hit by the downturn in demand for high quality pocket knives brought on by the invention of stainless steel, but mechanised its production process and survived . The firm started to expand again, taking over several well - known Sheffield cutlery companies and their trademarks . The works continued to enlarge with this upturn in business, with new buildings being added on Thomas Street in 1950 . In 1965 Needham, Veall & Tyzack became known as Taylor's Eye Witness to take advantage of its well - known trade mark . In 1975 it was bought by Harrison Fisher & Co who continued to use the Taylor's Eye Witness brand name for many of its products as well as producing "own label" goods for department stores including John Lewis, Tesco and Sainsbury's . </P> <P> On 1 June 2007 Harrison Fisher & Co Ltd changed its name to Taylors Eye Witness Limited . </P> <P> In February 2007 the works were upgraded as a listed building from Grade II to Grade II *, but later reverted to Grade II . Although the building has an interesting frontage, after 20th century intervention there are few internal features of historical interest . </P> <P> The building is constructed from red brick, ordinary quality bricks were used for the original construction while a harder and darker engineering brick was used for the later buildings . The building is rectangular in shape, and is delimited by Milton Street, Thomas Street, Headford Street, and Egerton Lane, at the rear . There are three internal courtyards but much of this space has been infilled by other buildings over the years . The main range of the works on Milton Street has 30 bays of windows and some basements . There is an arched carriage entrance with double wooden doors . </P>

When did taylor's eye witness begin trading