Alsops fields (as shown on Fairbanks 1797 map) were subdivided in the late 18th century into regular, grid plan developments as the Duke of Norfolk exploited the development potential of his estate. Street names in this area reflect the landowner and his family. This area retains much evidence of the character of its original development begun by the laying out of the streets and mews in the 1770s. By the last decades houses were beginning to be laid out (of which those on Howard Street and Arundel Street are important survivals. Restrictions on the pursuance of trades within the development were removed in 1800 and major cutlery works were constructed such as the surviving 'Butcher's Wheel' (1819-1860) , Lion Works (1840), Challenge Works (1883), Truro Works (1856), Sterling Works (1870), and Sellers Wheel (1855) (Dates from Harman and Minnis 2004, 137-138) Significant legibility of previous use - an important group of 18th and 19th century buildings.