Engineering works centred on Norry street. The works are first depicted on the 1965 OS map. Previously the site is shown as containing back-to-back houses. The houses are not shown on the 1st edition map of 1855 but must have been built before 1864 when the by-law housing regulations were introduced effectively banning further back-to-back developments. Prior to this the fields shown on the 1st edition map have the characteristics of piecemeal enclosure. Fragmentary legibility of 19th century street layout.