http://www.fundinguniverse.com/company-histories/HAWKER-SIDDELEY-GROUP-PUBLIC-LIMITED-COMPANY-Company-History.html;
Companies House: Company No. 00147649: http://wck2.companieshouse.gov.uk
http://www.fundinguniverse.com/company-histories/HAWKER-SIDDELEY-GROUP-PUBLIC-LIMITED-COMPANY-Company-History.html;
Companies House: Company No. 00147649: http://wck2.companieshouse.gov.uk