found: SCProfile, winter 2009:t.p. (SIG)
found: SIG plc website, 23 Feb. 2010(SIG plc; SIG is managed on a country-by-country basis and organises its activities into 4 divisions: Insulation & Building Environments, Exteriors, Interiors, and Specialist Construction Products) ; 18 May 2017: home p. (SIG; SIG plc) history p. (founded in 1957 when its first insulation distribution branch opened in Sheffield, UK; listed on the London Stock Exchange in May 1989)
found: Its Annual report 1994:t.p. (SIG) p.2 (registered office: Hillsborough Works, Langsett Road, Sheffield S6 2LW) p.16 (on 14 October 1994, the company changed its name from Sheffield Insulations Group plc to SIG plc; principal activities of the Group are the distribution and contract installation of thermal insulation materials and associated products and the design and distribution of architectural hardware) p.37 (principal trading subsidiaries: Sheffield Insulations Limited: distribution of insulating materials; [and others])
found: Wikipedia, viewed 18 May 2017(SIG plc; British-based international supplier of insulation, roofing, commercial interiors and specialist construction products; founded by Ernest Adsetts in 1957 Sheffield)
found: Companies House Beta website, viewed 18 May 2017(incorporated under Company number 00998314 as The Sheffield Insulating Company Limited on 29 December 1970; renamed and re-registered as Sheffield Insulations Group plc on 20 April 1989, then SIG plc on 14 October 1994; its principal subsidiary, Sheffield Insulations Limited, now dormant, was registered under Company number 00577389 from 29 December 1970)