Department for Transport:http://www.dft.gov.uk/pgr/security

Home Office:http://www.homeoffice.gov.uk/counter-terrorism

Foreign and Commonwealth Office:http://www.fco.gov.uk/en/fco-in-action/counter-terrorism

Centre for the Protection of National Infrastructure:http://www.cpni.gov.uk

The National Counter Terrorism Security Office:http://www.nactso.gov.uk

Security Service MI5:http://www.mi5.gov.uk/

The Secret Intelligence Service MI6:http://www.sis.gov.uk

GCHQ:http://www.gchq.gov.uk

Airfreight Industry Minimum Security Standards:http://www.aimss.org

Crimestoppers:http://www.crimestoppers-uk.org

Preparing for Emergencies:http://www.preparingforemergencies.gov.uk

US Transportation Security Administration:http://www.tsa.gov/

US Department of Homeland Security: http://www.dhs.gov/files/counterterrorism.shtm