Duval Security is on the Constructionline  Register

Constructionline is the UK's register of pre-qualified local and national construction and construction-related suppliers.  Constructionline is owned by the Department for Business, Enterprise & Regulatory Reform (formerly the DTI).

Constructionline provides pre-qualification information to help public and private sector procurers to access over 14,000 fully accredited suppliers free of charge.  Constructionline help contractors by reducing the need to fill-in pre-qualification forms for every tender and provide access to over 1,700 buyers.