Currently reused as an industrial estate this site began life c.1939 as ROF (Royal Ordnance Factory) Maltby, set up sat the outset of WWII primarily as one of the two production centres of the Lee Enfield No.4 Mark 1 rifle (the standard issue rifle of British and Commonwealth forces). Significant remains of the important WWII armament factory. Exact date of conversion to civil use unknown- site still worked as 'Works' in 1982. Royal Ordnance privatised 1985. Some remaining field boundary patterns so legibility is fragmentary.