This bread knife was likely made in Sheffield in the interwar period.  The firm can be traced to Charles Alexander Greenslade (1858-1924), who was from Taunton, Somerset.  He moved to Croydon and by the 1880s had established Greenslade & Co as a tea dealer and grocer.  In the late 1890s, he moved to 7 Philpot Lane, Cheapside, in the City of London.  One of his partners was Frederick John Johnson.  After the First World War, he registered Co-operative Caterers’ Supply Ltd as a provider of foodstuffs and other items.  He died at Croydon on 1 May 1924, leaving £8,319.  His will concluded with the words: ‘I thank my God most sincerely for the love and loyalty of all my children’.  The business continued as Greenslade & Sons and Caterers Supply Ltd at Philpot Lane.  The sons were William Alexander (1885-1953), Percy Griffith (1886-1974), Frank Stanley (1888-1962), and Walter Douglas (1890-1963).  The business was liquidated in 1971.