LINKS www.wfrc.co.uk Warrington Fire Research Centre laboratories have accreditation and other approvals for a wide variety of standardised tests specified by regulatory bodies throughout the world   www.pra.org.uk Since its inception in 1926, PRA has been the premier research association in the coatings field. Today we are the largest independent coatings centre of our kind, based on a worldwide membership, transnational activities and a global network of contacts   www.nbsplus.co.uk NBS Plus is produced by NBS, publishers of the National Building Specification.