This is an HTML version of an attachment to the Freedom of Information request 'Databases of personal information'.
Information Access Team 
Shared Services Directorate 
  2 Marsham Street, London SW1P 4DF 
Switchboard 020 7035 4848 
E-mail: [email address] Website: www.homeoffice.gov.uk 
 
Dr 
Geraint 
Bevan 
     Our 
Ref: 
11476 
[email address]
(by email) 
 
11 August 2010 
 
Dear Dr Bevan, 
 
I am writing further to my correspondence of 3 March 2009 regarding your 
information request dated 3 March 2009. We are now in a position to provide 
you with a full reply to your request.  I apologise for the time taken to provide 
you with this response, which I recognise falls well short of the standards the 
Department sets itself.  
 
You asked for:  
1. details of databases currently maintained (or planned) by the Home Office 
(or agents acting on its behalf) which record (or are intended to record) 
personal information about more than 10,000 British residents 
 
2. the (approximate) number of people whose personal information is 
recorded (or planned to be recorded on each of those databases. 
 
Your request has been handled as a request for information under the terms 
of the Freedom of Information Act (FOIA) 2000. 
 
I confirm that the Home Office holds the information you have requested and 
am pleased to be able to disclose most of it to you - please see the 
attachment to this letter.  This provides, where possible, the name of all 
databases held by the Home Office, and a general description of the type of 
information stored on it.  The list of databases is taken from the Home Office’s 
Information Asset Register (IAR), and is accurate as of October 2009.  The 
details of 156 databases have been released to you, and this list includes all 
databases currently maintained by the Home Office.  Please note, not all of 

these record personal information about UK residents – as noted, the list is 
taken from the Home Office’s IAR.  It does, however, provide a description of 
each database, which I hope you wil  find of use. 
 
For your further information, please note the Home Office Headquarters will 
be publishing an updated version of the releasable parts of its IAR later this 
month.  The UK Border Agency, Criminal Records Bureau, and Identity and 
Passport Service wil  likewise be publishing updated versions of their IARs in 
due course. 
 
It is not possible to provide you with the number of people whose details are 
recorded on each database.  This is because each database may contain 
multiple entries for the same individual. Therefore, the only way that the 
number of persons can be counted is by looking at each entry individually. 
Consequently, to ascertain the number of individuals concerned would exceed 
the appropriate cost limit of £600, as specified in the Appropriate Limit and 
Fees Regulations 2004 (see Annex A for further details).  Although your 
request would at present be too costly to answer, if you refine it so that it falls 
under the cost limit it wil  be considered further.  
 
While it has been possible to provide you with the title and a description for 
most of the databases held by the Home Office and its agencies, details 
relating to two databases have been withheld.  After careful consideration it 
has been determined that this information is exempt from disclosure by virtue 
of the exemptions provided at the following sections of the Freedom of 
Information Act:  
• Section 30(2)(b) ‘investigations and proceedings conducted by 
public authorities’ 
• Section 31(1)(a) ‘law enforcement’ 
 
Section 30(2)(b) provides for the withholding of information relating to the 
obtaining of information from confidential sources, and section 31(1)(a) for the 
withholding of information if disclosure would, or would be likely to, prejudice 
the prevention or detection of crime.    Further information on the application 
of these exemptions is provided in Annex B below. 
In reliance on sections 23(5) ‘information supplied by, or relating to, bodies 
dealing with security matters’, and 24(2) ‘national security’, the Home Office 
neither confirms nor denies it holds any further information relevant to your 
request. These sections of the FOIA exempt public authorities from the duty to 
say whether or not they hold requested information.    Further information on 
the application of these exemptions, including the relevant public interest test, 
can be found in the Annex to this letter.  This response should not be taken as 
conclusive evidence that the information you have requested exists or does 
not exist. 
 
I hope that you find this information of interest, and would like to assure you 
that you have been supplied with all disclosable information that the Home 
Office holds. Where information has been withheld, I would like to assure you 

that we have considered the application of exemptions with great care in this 
case.  
 
Yours sincerely  
 
Diana Pottinger 
Information Access Caseworker  
 

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ANNEX A – Section 12 cost limit. 
 
Under section 12 of the Freedom of Information Act, the Home Office is not 
obliged to comply with any information request where the prescribed costs of 
supplying you with the information exceed £600.  The £600 limit applies to all 
central government departments and is based on work being carried out at a 
rate of £25 per hour, which equates to 3½ days work per request. Prescribed 
costs include those which cover the cost of locating and retrieving information, 
and preparing the information for disclosure to you.  They do not include 
considering whether any information is exempt from disclosure, overheads 
such as heating or lighting, or disbursements such as photocopying or 
postage. 
 
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ANNEX B – Public Interest Test Exemptions, Sections 30 and 31 
 

Section 30 Investigations and proceedings conducted by public 
authorities  

(2) Information held by a public authority is exempt information if—  
(b) it relates to the obtaining of information from confidential sources.  
Section 31 Law enforcement  
(1) Information which is not exempt information by virtue of section 30 is 
exempt information if its disclosure under this Act would, or would be likely to, 
prejudice—  
(a) the prevention or detection of crime,  
 
Considerations Favouring Disclosure
Providing members of the public with a full list of databases would aid 
transparency, and could possibly help to prompt the reuse of public sector 
data.  
 
With regard to databases which hold personal data, there is an added factor 
in favour of disclosure. Concern over the levels of Government monitoring of 
citizens is high on the public agenda. Disclosure of the details of all such 
databases would inform the public about the types of information the Home 
Office may hold about them.  The release of such information could also 
contribute to the quality and accuracy of the public debate about the so-called 
“surveillance society”.   
 
Considerations Favouring Non-Disclosure
The current and future prevention of crime would be compromised by the 
release of details about particular databases into the public domain.  Release 

of this information could harm ongoing investigations and security operations, 
by alerting suspects and organisations to the fact that certain information is 
collected and held by the Home Office.  Making the existence of some 
databases public could also encourage hackers to attempt to attack or destroy 
the databases, and this could seriously hamper ongoing investigations and 
security operations.  In addition if knowledge of the existence of certain types 
of databases were to be made public, this could implicate the sources of the 
information base.  Making the databases known could reveal confidential 
sources, or result in the public making assumptions about sources.  
 
Balancing Test
Withholding the names and description of two of the databases is critical for 
the prevention and detection of crime.  While there is a public interest in being 
open and transparent, the public interest arguments in favour of withholding 
the information are stronger.   The public interest in favour of providing facts 
to promote full debate, must be weighed against keeping the public safe and 
maintaining security.  Listing and describing all the databases held would 
provide criminals/terrorists planning attacks on the UK with information that 
could affect the future prevention and detection of crime. This would 
additionally put the security of members of the public at risk.  It could also 
result in the Home Office’s infrastructure coming under attack by hackers, 
which would place the UK public in even greater jeopardy.  On balance, 
maintaining public safety and the prevention and detection of crime outweighs 
any arguments for release. It is therefore not in the public interest to release 
the withheld information. 
 

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ANNEX C – Public Interest test Exemptions, Section 23 and 24 
 
Section 23(5) and 24(2) of the Freedom of Information Act state: 
23(1) Information held by a public authority is exempt information if it was 
directly or indirectly supplied to the public authority by, or relates to, any of the 
bodies specified in subsection (3). 
(5) The duty to confirm or deny does not arise if, or to the extent that, 
compliance with section 1(1)(a) would involve the disclosure of any 
information (whether or not already recorded) which was directly or indirectly 
supplied to the public authority by, or relates to, any of the bodies specified in 
subsection (3). 
24(1) Information which does not fall within subsection 23(1) is exempt 
information if exemption from section 1(1)(b) is required for the purpose of 
safeguarding national security. 
(2) The duty to confirm or deny does not arise if, or to the extent that, 
exemption from section 1(1)(a) is required for the purpose of safeguarding 
national security.  
Section 23(5) is an absolute provision and consequently there is no further 
consideration required. 
Section 24(2) public interest test
Public interest considerations in favour of confirming whether the 
information is held
To confirm or deny whether the requested information is held would indicate 
whether the Home Office does or does not have databases with national 
security issues. There is some speculation about what type of databases are 
held with little firm information in the public domain. Increased openness with 
regard to this would increase understanding and transparency in this area and 
inform the public debate. 
Public interest considerations in favour of maintaining the exclusion of 
the duty to either confirm or deny
In this instance, maintenance of the exclusion of the duty to confirm or deny 
whether the department holds the information you have requested is required 
for the purpose of safeguarding national security.  Electronic attacks are 
directed at government organisations globally, including in the UK. If the 
department were to either confirm or deny whether it held certain information, 
it would increase this risk of electronic attack. 
Balance of the public interest
We have determined that safeguarding of national security interests is of 
paramount importance and that in all circumstances of the case, the public 
interest in maintaining the exclusion of the duty to confirm or deny outweighs 
the public interest in confirming or denying whether we hold the information in 
question. This response should not be taken as conclusive evidence that the 
information you have requested exists or does not exist.   

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ANNEX D  
If you are dissatisfied with this response you may request an independent 
internal review of our handling of your request by submitting your complaint 
within two months to the below address quoting reference 11476: 
 
Information Access Team 
Information Management Service 
Home Office 
Ground Floor, Seacole Building 
2 Marsham Street 
London 
SW1P 4DF 
Email: [email address] 
 
During the independent review the department’s handling of your information 
request wil  be reassessed by staff who were not involved in providing you 
with this response.  Should you remain dissatisfied after this internal review, 
you wil  have a right of complaint to the Information Commissioner as 
established by section 50 of the Freedom of Information Act.