In 1920, British Stainless Products was registered as a private limited company, with £3,000 capital. It was described as a manufacturer and dealer in stainless steel, cutlery, and other products. The directors were James Chantry (1886-1951), Barnsley Road. Sheffield;  and Arnold Goldthorpe Peat, Beechwood, Eckington, who was the traveller. The office was in Surrey Street. The firm was later located in Rockingham Street (1925) and additionally at Central Works, Cambridge Street (1929).  Besides cutlery, the products included stainless stair rods and hospital equipment, such as bowls. In 1927, Chantry filed a patent (No. 304,853) for a knife sharpener (Sheffield Independent, 25 Feb 1929). In 1931, the company was bankrupt. Its modest manufacturing equipment – a 5 h.p. motor and a fly press – besides its stock of unfinished cutlery and office fittings were offered for sale (Sheffield Daily Telegraph, 5 September 1931). 

Within a month, the firm had been re-registered with £100 capital. The directors were Richard E. Skipwith, of Ruddington, Nottinghamshire (chairman); Edward R. B. Skipwith (no  address), and E. Allen, engineer, Abbey Lane, Sheffield (Sheffield Daily Independent, 16 October 1931).  In the 1934 Kelly’s Directory of the Engineering, Hardware & Metal Trades, British Stainless Products was located at Prince of Wales Road, Darnall.  However, in that year receivers for the debenture holders liquidated the company. It was offered for sale as a going concern, with ‘complete equipment of modern machinery suitable for production of finished table cutlery’ (Sheffield Daily Independent, 9 April 1934).  Apparently, there were no takers and the company was struck off the register in 1937. ‘IMMACULATE’ was etched on one knife by this maker (now in the Hawley Trust Collection). That trade mark also associated with English Steel Corporation). The mark ‘BSP Ltd’ has been seen on stainless pocket-knives.

In 1938, James Chantry founded Archant Ltd with Robert William Archer (1882-1956).  The firm, capitalised at £500 and situated at 76 Carver Street, was a manufacturer and dealer in tools and instruments. Chantry probably intended to exploit his knife sharpener. He resided at Kenbourne Road and died on 6 February 1951, aged 64. He left £503 to his widow, Blanche.  Archer died 7 January 1956, leaving £6.874.  Archant Ltd and the knife sharpener were later acquired by Harrison Fisher & Co Ltd.