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Terrorism Arrests (866_15)


I would like to know how many under-18s have been arrested for terror-related offences in the last five years, including, if possible, a breakdown of how many arrests per age (i.e. twenty 15-year-olds, six 14-year-olds etc) and how many relevant arrests were made in each of the five years.


We can confirm that some relevant information is held by West Midlands Police. However, we are withholding that information since we consider that the exemptions outlined below apply to it.


The Freedom of Information Act places two responsibilities on public authorities, the first of which is to confirm what information it holds and secondly to then disclose that information, unless exemptions apply.

In this case the information is exempt by virtue of the following exemptions

24(1) (National Security)

Section 31 (1) (a) (b) (Law Enforcement)

Section 40 (2) (Personal Information)

These exemptions and explanatory notes are shown here:

In line with the above, I am required to complete a Prejudice Test/Public Interest Test (PIT) on disclosure. Please find this PIT attached.

Evidence of Harm

The threat from terrorism cannot be ignored.  It should be recognised that the international security landscape is increasingly complex and unpredictable.  The UK faces a sustained threat from violent terrorists and extremists.  Since 2006, the UK Government have published the threat level, based upon current intelligence and that threat has remained at the second highest level, ‘severe’, except for two short periods during August 2006 and June and July 2007, when it was raised to the highest threat, ‘critical’, and in July 2009, when it was reduced to ‘substantial’. The current threat level to the UK from international terrorism is “severe” (see below link) – this means that a terrorist attack is highly likely. Policing operations and contingency planning remain under constant review and a wide range of overt and covert tactics will continue to be used across the UK.

The disclosure of the requested information would undermine the individual regional/force CT units which would consequently be detrimental to our ability to be able to deal with the on-going terrorist threat we face.  By providing the number of arrests specifically conducted by West Midlands Police, would allow comparison of CTU units across the country and enable terrorists to build a picture of what resources are in place and where they are currently deployed. It is felt that the disclosure of this information would prejudice the effectiveness of the national counter terrorism effort and would allow inferences to be drawn about our force level CT activity.

Disclosure of information below a national figure would start to indicate levels of policing activity at individual force levels and that information could allow individuals to exploit what they might consider to be “softer”, or what appears to be less active or resourced areas, by analysing patterns of police activity and deployments over time, ultimately to avoid detection. This would infer CT policing resources and by analysing similar data from around the country, we might allow criminals to understand national CT policing activity. For example, this would enable terrorists to make judgments concerning their preferred travel routes where they perceive there to be a greater vulnerability, lower staff levels and lesser probability of being apprehended.  The release of figures that are too detailed is likely to frustrate Special Branch activity in response to changing terrorist travel patterns.  Ultimately, this constant disruption would reduce the effectiveness and efficiency of Special Branch/CT units, increase the advantage to the terrorist and increase the risk and vulnerability to the security of the UK from terrorist attack.

Factors favouring disclosure for S24

The public are entitled to know how public funds are spent and by disclosing this information the public would be able to see where public money is being spent and know that forces are doing as much as they can to combat terrorism.

The factors favouring non-disclosure for S24

By disclosing this information would render Security measures less effective. This would lead to the compromise of ongoing or future operations to protect the security or infra-structure of the UK. The risk of harm to the public would be increased if the location of vulnerable areas of the UK were made public as this would provide opportunity for terrorist planning. Ongoing or future operations to protect the security or infrastructure of the UK would be compromised as terrorists could map across the country the level of counter-terrorist activity, giving them the knowledge of force’s individual capabilities.

The factors favouring disclosure for S31

By disclosing the information the public would see where public funds are being spent and would be able to take steps to protect themselves and their families. Better public awareness may reduce crime or lead to more information from the public as they would be more observant in reporting suspicious activity. The Home Office regularly publish national statistical data on terrorism arrests.

Factors favouring non-disclosure for S31

By disclosing the information law enforcement tactics would be compromised which would hinder the prevention and detection of terrorist crime.  More crime would be committed because terrorists would know which forces had less CT capability and capacity and individuals would therefore be placed at a greater risk.  A fear of crime would be realised because if the terrorists identified more vulnerable areas, they would target and exploit these areas and the public would be in fear of more terrorist activity occurring.  There would be an impact on police resources because if the number of CT Unit arrests was disclosed per force, the more vulnerable forces may need to increase their resources to reassure and protect the community.

Balancing Test

The security of the country is of paramount importance and the Police service will not divulge information if to do so would place the safety of an individual at risk or undermine National Security. Whilst there is a public interest in the transparency of policing operations and in this case providing assurance that the police service is appropriately and effectively engaging with the threat posed by a terrorist attack, there is a very strong public interest in safeguarding both national security and the integrity of police investigations and operations in the highly sensitive area of terrorism.

As much as there is public interest in knowing that policing activity is appropriate and balanced in matters of national security this will only be overridden in exceptional circumstances. CTU capabilities are high-profile sensitive issues of intelligence value to the terrorist and therefore it is our opinion that for these issues the balancing test for disclosing the information requested is not made out.

Section 40 (2) allows for personal data to be withheld where release would breach the third party’s data protection rights. It would be unfair to release this information where any person could be identified from the data and in this case the right to privacy outweighs any public interest in release


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