The street pattern of this area was first established around the time of Leather's 1823 survey of the town and influenced by the surveyed enclosure of the 'Dun Fields' within which the later street pattern was inserted. It is a typical example of the kind of grid pattern established by the towns large land owners in the early 19th century for the sale of plots piecemeal to speculative development. This area was completely filled with a high density of buildings (primarily back to back housing courts with a significant proportion of inns, light metal trades workshops and breweries) by the survey of the 60 inch to the mile OS in 1851. Much of the area was cleared in the later 20th century and redeveloped as light industrial units. Important survivals of pre 1850 fabric include Ashberry's Metal Works (currently Aircraft and Commercial Tools) - a edge tool and plating works (Aitchison 2002); a number of public houses and possibly fragments of the foundry between Dun Fields and Acorn Street. Many of the late 20th century units are currently engaged in aspects of automotive industry. Fragmentary legibility of early 19th century street pattern.