Redaction and Freedom of Information are closely related. The Freedom of Information Act (FOI Act) gives people with the right to access information held by or on behalf of public authorities. The FOI Act promotes transparency, accountability, and public trust in government and public sector operations. By enabling the public to scrutinise the actions and decisions of public bodies, FOI requests foster an informed citizenry and a more open society.
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What is Redaction?
Redaction is the process of obscuring or removing sensitive information from documents before their release. In the context of FOI requests, redactions are employed to balance the public’s right to know with the need to protect certain types of information. Redactions ensure that while transparency is maintained, sensitive details that could harm individuals, compromise national security, or reveal trade secrets are kept confidential.
Why Redact?
There are three main reasons why you might redact information from a document:
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the requestor doesn’t want the information
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the information contains personal data and disclosing it would breach the Data Protection Act
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the information to be redacted is exempt from disclosure.
For example, the requestor may ask for only a small part of a document and the rest can therefore be removed before it is shared. Or, a document could contain the names or contact details of people that are not already in the public domain and should be removed to comply with the GDPR.
However, in some instances redaction is necessary because there are legal grounds – exemptions – for withholding it.
What are Exemptions?
There are two types of exemptions:
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class based exemptions, where some types of information are automatically exempt;
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prejudice based exemptions, where information may be exempt of sharing it would be against the public interest.
If an exemption applies then you can refuse the request to provide some or all the information requested.
In most instances if some of the information to exempt from disclosure it would not be reasonable to withhold all of it. In many instances, particularly for larger documents or data sets where only a small part is exempt, it would be unlawful.
Therefore you should consider simply removing those parts of documents containing exempt information.

The Limits of Redaction
There are some circumstances when redaction is not the right course of action. Typically this is when redaction can’t be done, either because the document is not suitable for redaction or the information itself can’t be redacted. However, redaction may not be possible simply because of the volume of information that has to be reviewed.
Records that Can’t Be Redacted
Most things can be redacted whether in physical or electronic form. However care must be taken to ensure they are not easily un-redacted. The Information Commissioner calls this “ineffective redaction”. For example, you could black out text in a word document and the PDF it but most people now have access to PDF editing tools.
A more common example of something that is harder to redact is CCTV footage or images. These are potentially disclosable but many systems do not have the capacity to edit them by e.g. obscuring the identities of people pictured.
In addition it will be important to review the metadata associated with electronic files and see if any of that information needs to be redacted too.
If, because of the nature of the record, you cannot effectively redact information in it them you may need to refuse to disclose any part of it.
Information that Can’t Be Redacted
Naturally you want to redact information to avoid disclosing it. However, that means ensuring that what is exempt from disclosure cannot be inferred.
Consider this case study from our own experience:
Case Study
While providing FOI services for a hospital we received a request for reports into maternal deaths. although we could redact direct identifiers such as name and dates of birth and death there was still enough information in the body of the reports for the deceased, and their family members, to be potentially identifiable.
Because we could not effectively anonymise the reports we decided against disclosing them at all. That decision was upheld by the Information Commissioner
Too Much To Redact
In some instances there is so much information to review and redact it is impossible to do it within the “appropriate limit”.
The FOI Act says you do not have to respond to requests that would cost more than £450 to comply with. As you are allowed to calculate a rate of £25 per hour, this means in practice any request that would take longer than 18 hours to comply with can be refused.
Alternatively you can choose to comply with the request, or ask the requestor to cover the costs of compliance.
Neither Confirm Nor Deny
In some instances you should apply an exemption to disclosure in a way that means you can neither confirm nor deny that you hold the information. That means you should not release anything at all, and naturally this means redaction cannot apply.
If you do redact information each redaction must be justified and documented. You must have a clear rationale for withholding specific details while disclosing the remainder of the information. This will help you if the requestor seeks an internal review or complaints to the Information Commissioner.
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Challenges in the Redaction Process
Redacting information poses several challenges. One common issue is ensuring that all sensitive information is adequately covered without inadvertently revealing any confidential details. Balancing the need for transparency with the obligation to protect sensitive information requires careful judgment and expertise. Additionally, the redaction process can be time-consuming and resource-intensive, particularly for complex or voluminous documents.
The Impact of Redactions on FOI Requests
Redactions inevitably affect the comprehensiveness of the information disclosed through FOI requests. While necessary for protecting certain interests, excessive or improper redactions can erode trust in public authorities. Striking the right balance between transparency and confidentiality is crucial for maintaining the credibility of the FOI process and ensuring public confidence in governmental transparency.
In short, you must always assume you should disclose the information unless there is a clear public interest or absolute exemption that applies.
Best Practice for Redaction and Freedom of Information
To achieve effective and compliant redactions, public authorities should adopt best practice. Providing comprehensive training and resources for staff responsible for handling FOI requests is essential. Developing clear guidelines and protocols for redacting information ensures consistency and accuracy. Utilising advanced redaction tools and technologies can streamline the process and reduce the risk of errors. Additionally, maintaining transparency in the redaction process by clearly documenting the reasons for withholding information fosters public trust and accountability.
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Gain the practical skills you need work with Freedom of Information and GDPR with these five-star rated training course.
Available in person, online or in-house the focus on practical skills and unique post-course support you get by learning with us will ensure you and your organisation can tackle this key governance activity with confidence.

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Conclusion
In conclusion, redactions play a pivotal role in the FOI process, enabling public authorities to fulfil their transparency obligations while protecting sensitive information. By adhering to legal standards, adopting best practice, and leveraging technological advancements, public authorities can effectively navigate the complexities of redactions and uphold the principles of open government.
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