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Manchester Arena incident

Updates and advice following the incident in Manchester Arena on 22 May 2017.

Manchester Arena

Following the recent attacks, it is important that businesses reassure their staff to ensure they are alert, but not alarmed. This is the right moment for businesses to review their security plans to ensure that the measures they should already have in place, are still current and have been tested to ensure staff are prepared and confident. For more information and advice on protecting your business or organisation from the terrorist threat visit the NACTSO website.

Protective Security Advice


Initial actions at a terrorist major incident

Personnel security, good guarding practice

Depending upon their responsibilities an effective security guard must be able to demonstrate they can respond effectively to a number of scenarios including:


Are your first aid kits and crisis incident kits (grab bags) checked regularly, complete and accessible? Link to citizenAid

Search Planning

Do you have plans to search your site to deal effectively with either bomb threats or for secreted threat items, and are your staff familiar with those plans?

Do you have a person and vehicle, search and screening policy and plan that you can implement should there be a threat increase?

Business as usual search and screen (looking for prohibited items) should, when done well, provide a very good capability to detect larger terrorist items concealed about the person

  • ensure the search and screening regime in place at the venue is done well
  • consider provisional search and screening on the approach or outside the venue, for example a visual check inside jackets and bags
  • ensure you maintain your search and patrol regime for the lifecycle of the event including prior to the commencement, during and post event
  • provide effective public address messaging of people as they approach, asking people to prepare for additional search and screening. This should reduce unacceptable delay
  • prior notification (at point of sale or media) of these extra security measures and encouraging people to arrive early, will smooth peaks and allow safe and effective searching


Have you reviewed your evacuation, invacuation and lockdown plans in response to terrorist attack?

Physical Security

Have you checked CCTV systems? Are they all working correctly? Are the date/time stamps accurate?

Security Culture

Are all staff identifiable and wearing identification? Do you encourage staff to challenge anyone in their building not displaying ID?

Reporting suspicious transaction

If you are suspicious of a transaction or attempted transaction, or discover a theft or disappearance that cannot easily be explained, report it to the Anti-Terrorist Hotline on 0800 789321 or email Chemical.Reporting@Met.Police.UK.

Home Office guidance on selling chemical products responsibly

Storage and sale explosive precursors

Guidance for the public, businesses and laboratories on using, storing and selling explosives precursors and poisons.


Remember to stay away from glass and out of line of sight for any devices. See the minimum cordon distances. Once the security services arrive cordons may be deployed, the following are minimum distances.

100 meters - Briefcase or Rucksack

200 meters - Suitcase, wheelie bin, small car

400 meters - Larger items, lorries and vans

News updates

NaCTSO will continue to update our advice as needed, in the meantime please continue to use our current advice. Please check back regularly to these pages for updated information or register for updates here.

You can follow @G M Police and @Terrorism Police for Twitter updates on the incident.

Useful information that may assist when deploying the tactical options:

Find out more about the Action Counters Terrorism campaign.

If you see anything that causes you concern or raises your suspicions do not hesitate to call the Police confidentially on 0800 789 321 or in an emergency 999. If you get caught up in the rare event of a weapons attack we urge you to follow the Run, Hide, Tell advice.

Published 23 May 2017
Last updated 23 May 2017 + show all updates
  1. Updated advice from the CPNI
  2. Updated CT advice
  3. First published.