Links Please click here for the CPNI document on due diligence when selecting barriers www.appss.org.uk www.bre.co.uk www.redbooklive.com www.bsia.co.uk www.cpni.gov.uk www.dft.gov.uk www.dhfpoweredgategroup.co.uk www.homeoffice.gov.uk www.homeoffice.gov.uk/police www.homeoffice.gov.uk/science-research www.hvmhub.com www.iisec.co.uk www.rusi.org www.counterterrorexpo.com www.security-institute.org www.transec.com http://www.fobs.eu