The UK faces a range of threats from terrorism, espionage and hostile foreign states. Understanding the threats facing a business or organisation will make sure protective security measures are proportionate, effective and responsive.
To report an imminent threat, call 999 or ring the police Anti-Terrorist Hotline on 0800 789 321
If you know something about a threat to national security such as terrorism or espionage, contact MI5 online via their website or call:
0800 111 4645 (freephone)
020 7930 9000 (standard call rates apply)
020 7930 9000 (international calls only)