What is a SIRA marker and can it be challenged?

A SIRA marker can significantly affect your ability to open or maintain bank accounts, obtain financial services and, in some cases, operate a business. Although less widely known than a CIFAS marker, it may have equally serious consequences. This guide explains what a SIRA marker is, how it may arise, the legal framework governing challenges and the practical steps individuals and businesses can take to protect their interests.

Understanding SIRA markers and their impact on banking

Many people first become aware of a SIRA marker only after experiencing unexpected difficulties with a bank or financial institution. These may include:

• the closure of a personal or business bank account;
• refusal to open a new account;
• repeated requests for additional verification or documentation;
• delays in processing financial transactions; or
• increased scrutiny when applying for financial products.

 

Unlike a criminal conviction, a SIRA marker does not establish that fraud or other unlawful conduct has occurred. However, it may prompt financial institutions to conduct enhanced due diligence or decide that continuing a banking relationship presents an unacceptable level of risk.

Given the increasing regulatory expectations placed on UK financial institutions regarding anti-money laundering (AML), fraud prevention and financial crime compliance, adverse database entries are playing an increasingly significant role in banks’ risk-based decision-making.

What is a SIRA marker?

SIRA (National SIRA) is a fraud prevention database operated by Synectics Solutions. It enables participating organisations, including banks, insurers, telecommunications providers and other regulated businesses, to share information designed to identify potential fraud risks.

Rather than determining whether someone has actually committed fraud, SIRA helps organisations assess whether applications or transactions require further investigation before decisions are made.

Where inconsistencies or concerns are identified during internal fraud checks, participating organisations may record information on the SIRA system. Other members accessing the system during future applications may then decide to carry out additional enquiries or consider whether the perceived risk affects their own decision-making.

Importantly, a SIRA marker is not:

• a criminal conviction;
• a finding of fraud by a court;
• inclusion on a public register; or
• evidence that criminal proceedings have been commenced.

Nevertheless, the practical consequences can be substantial because many regulated firms rely upon internal fraud prevention databases alongside their wider financial crime controls.

Why are SIRA markers becoming increasingly important?

Since this article was first published, UK regulators have continued to place greater emphasis on financial crime prevention, fraud detection and customer due diligence.

Financial institutions are expected to operate robust systems that identify potential financial crime risks, including:

• fraud;
• money laundering;
• sanctions breaches;
• terrorist financing; and
• identity misuse.

As a result, banks increasingly rely upon multiple intelligence sources when making decisions about onboarding customers or maintaining existing relationships.

This trend has coincided with a significant increase in reports of so-called “de-banking”, where individuals and businesses experience account closures following internal risk assessments rather than criminal findings.

Although each institution has its own risk appetite, and acts accordingly, adverse information held on fraud prevention databases may influence any decisions they make.

This means that even where no criminal proceedings exist, an inaccurate or disproportionate fraud marker can have long-lasting commercial and personal consequences.

How does a SIRA marker differ from a CIFAS marker?

Although SIRA and CIFAS are often mentioned together, they operate differently and serve different purposes:

SIRA	CIFAS
Operated by Synectics Solutions	Operated by CIFAS
Primarily used for fraud risk assessment by participating organisations	Used to record fraud prevention information across member organisations
Usually not visible through standard credit reports	Usually not visible through standard credit reports
May influence internal banking decisions and enhanced due diligence	May influence applications for banking, credit and financial services
Can be challenged where inaccurate, unfair or disproportionate	Can also be challenged where appropriate

The precise approach to challenging either marker depends on the underlying facts and the evidence available.

How can you find out whether you have a SIRA marker?

Unlike a credit reference agency record, SIRA information is not routinely available through consumer credit reports.

Many individuals only discover that information may exist after:

• receiving notice that their bank account will be closed;
• being refused new banking facilities;
• encountering repeated application refusals; or
• being informed that enhanced fraud checks have identified concerns.

Where appropriate, individuals may consider exercising their rights under UK data protection legislation by submitting a Data Subject Access Request (DSAR) to obtain personal data held by relevant organisations.

A carefully prepared DSAR may help establish:

• whether information has been recorded;
• which organisation supplied the information;
• the factual basis relied upon;
• whether the data appears accurate; and
• whether further legal action may be appropriate.

Understanding exactly what information has been recorded is often the first step before deciding whether a challenge is likely to succeed.

How can you challenge a SIRA marker?

A SIRA marker can often be challenged, but success depends on the individual circumstances, the evidence available and whether the information recorded complies with applicable legal and regulatory requirements.

There is no automatic process requiring an organisation to remove a marker simply because it causes inconvenience. Instead, the challenge should demonstrate that the information recorded is, for example:

• factually inaccurate;
• incomplete or misleading;
• no longer necessary;
• disproportionate to the circumstances; or
• processed in breach of applicable data protection principles.

Early legal advice can help identify the most appropriate strategy before taking formal steps.

What evidence may support a challenge?

The strength of any challenge depends largely on the supporting evidence.

Useful evidence may include:

• correspondence with the relevant bank or financial institution;
• account statements and transaction records;
• application forms and supporting documentation;
• proof of identity and address;
• evidence explaining any apparent discrepancies;
• fraud reports where identity theft is alleged;
• Action Fraud reference numbers (where applicable); and
• information obtained through a Data Subject Access Request.

In many cases, identifying precisely why the marker was recorded is the most important stage in the process.

 

Can a SIRA marker be challenged under UK data protection law?

Potentially, yes.

Organisations processing personal data must comply with the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018. These laws require personal data to be processed lawfully, fairly and accurately.

Where an individual believes information has been incorrectly recorded or retained, they may have legal grounds to request:

• correction of inaccurate personal data;
• deletion of information where appropriate;
• restriction of processing in certain circumstances; or
• an explanation of the decision-making process where required under data protection legislation.

Each case depends on its own facts. Simply disagreeing with a bank’s decision will not necessarily mean the processing is unlawful, but where factual errors or procedural shortcomings exist, there may be grounds to seek correction.

Practical steps when challenging a SIRA marker

While every case is different, the process commonly involves several stages.

Step 1: Obtain the relevant information

Before challenging any decision, establish what information is being held and by whom. A carefully drafted Data Subject Access Request can assist in identifying the relevant records and understanding the basis for the concerns raised.

Step 2: Submit a detailed challenge

The organisation that placed or relied upon the information should normally be given an opportunity to review its decision.

A well-supported challenge should address each concern individually and provide documentary evidence wherever possible, rather than relying solely on explanations.

Step 3: Consider escalating the complaint

Where the response remains unsatisfactory, further options may include:

• using the organisation’s formal complaints procedure;
• referring the complaint to the Financial Ombudsman Service, where appropriate;
• raising data protection concerns with the relevant organisation; or
• considering legal proceedings, where justified.

Selecting the appropriate route requires careful consideration of the facts, the available evidence and the remedies sought.

How can a SIRA marker affect individuals and businesses?

Fraud prevention databases are commonly linked to retail banking, but their impact can extend well beyond everyday banking services.

Individuals may experience:

• closure of personal current accounts;
• difficulties opening accounts with other banks;
• enhanced due diligence during financial transactions;
• delays when applying for mortgages or lending facilities; and
• disruption to day-to-day financial affairs.

 

Businesses may face:

• closure of corporate banking facilities;
• disruption to payroll and supplier payments;
• increased compliance enquiries;
• additional scrutiny from financial institutions; and
• reputational concerns affecting commercial relationships.

These consequences can become particularly significant where businesses rely on uninterrupted banking facilities to operate effectively.

Where account closures arise alongside wider financial crime enquiries, legal advice should consider the broader regulatory landscape, including the Proceeds of Crime Act 2002 (POCA) and related asset recovery powers.

Gherson regularly advises individuals and businesses facing complex financial crime investigations, account freezing measures and POCA-related proceedings. You can learn more about our Proceeds of Crime services here.

Understanding the wider context is often essential, as issues relating to fraud prevention databases may overlap with account freezing orders, anti-money laundering enquiries or other financial crime investigations.

What if your bank decides to close your account?

Banks generally retain broad contractual discretion when deciding whether to continue providing banking services, provided they comply with their legal and regulatory obligations.

However, account closures should not automatically be accepted as unchallengeable.

Depending on the circumstances, it may be appropriate to examine:

• whether the bank followed its own procedures;
• whether the information relied upon was accurate;
• whether regulatory obligations were properly applied;
• whether procedural fairness was observed; and
• whether any decision was reasonable and proportionate.

A prompt legal assessment may help identify whether the closure can be challenged before further financial or commercial consequences arise.

Common mistakes when challenging a SIRA marker

Individuals and businesses sometimes make decisions that reduce the likelihood of successfully resolving the issue. Common mistakes include:

• assuming the marker cannot be challenged;
• waiting too long before requesting the relevant information;
• submitting unsupported explanations without documentary evidence;
• overlooking their rights under UK data protection legislation;
• failing to follow the organisation’s complaints procedure before escalating the matter; and
• focusing solely on the account closure rather than the underlying information that prompted the decision.

Obtaining the relevant records and understanding the reasons behind the decision are often essential before determining the most effective legal strategy.

Why early legal advice matters

SIRA markers may arise alongside wider regulatory or financial crime issues, including anti-money laundering (AML) enquiries, account freezing measures or investigations under the Proceeds of Crime Act 2002 (POCA).

Addressing only the immediate banking issue without considering the broader legal context may result in missed opportunities to protect your position.

Seeking specialist legal advice at an early stage can help:

• assess the evidence supporting the marker;
• identify appropriate legal remedies;
• engage effectively with financial institutions and regulators; and
• minimise disruption to your personal or business affairs.

 

Gherson insight

A SIRA marker should not be treated as a finding of fraud or criminal wrongdoing. However, because financial institutions increasingly rely on sophisticated fraud prevention systems as part of their financial crime compliance obligations, even an inaccurate or disproportionate marker can have significant practical consequences.

Our experience shows that these cases often require more than simply disputing an account closure. A successful outcome frequently depends on understanding the wider regulatory framework, analysing the evidence relied upon by the institution and developing a strategic approach that addresses both the underlying data and the broader financial crime issues that may arise.

Frequently asked questions

What is the difference between a SIRA marker and a CIFAS marker?

Although both are fraud prevention databases used by participating organisations, they are operated by different organisations and serve different functions. A SIRA marker is not the same as a CIFAS marker, and the appropriate approach to challenging each type will depend on the circumstances.

Does a SIRA marker mean I have committed fraud?

No. A SIRA marker is not a criminal conviction or a formal finding that fraud has occurred. It is information used by participating organisations as part of their fraud risk assessment and customer due diligence processes.

Can a SIRA marker affect my bank account?

Yes. A SIRA marker may contribute to decisions relating to opening or maintaining personal or business bank accounts, as well as other financial services. However, banks generally consider a range of information rather than relying solely on one database.

Can I ask to see the information held about me?

In many cases, yes. Individuals may be able to obtain information about personal data held by organisations by making a Data Subject Access Request under UK data protection legislation.

Can an incorrect SIRA marker be removed?

Potentially. Where a marker is inaccurate, unfair or otherwise inconsistent with applicable legal or regulatory requirements, it may be possible to seek its correction or removal. The appropriate approach will depend on the facts, the available evidence and the legal issues involved.

How long does it take to challenge a SIRA marker?

There is no standard timeframe. Some matters may be resolved through discussions with the organisation concerned, while more complex cases involving complaints or legal proceedings can take considerably longer.

How Gherson can assist

Gherson’s White Collar Crime Team has extensive experience advising individuals and businesses affected by bank account closures, fraud prevention databases and financial crime investigations.

Our team regularly assists clients by:

• advising on Data Subject Access Requests and reviewing information held by financial institutions;
• assessing whether fraud prevention markers may be challenged;
• representing clients in complaints involving banks and financial institutions;
• advising on investigations involving the Proceeds of Crime Act 2002 (POCA), anti-money laundering obligations and account freezing measures; and
• developing strategic legal solutions where financial crime, regulatory and reputational issues overlap across multiple jurisdictions.

 

Early specialist legal advice can help individuals and businesses concerned about a SIRA marker, bank account closure or a related financial crime investigation protect their rights and identify the most appropriate course of action.

If you have any questions arising from this blog, please do not hesitate to contact us for advice, send us an e-mail, or, alternatively, follow us on X, Facebook, Instagram, or LinkedIn to stay-up-to-date.

This article was first published in October 2025 and has been updated in July 2026 to reflect current UK legal developments, regulatory guidance and financial crime compliance practices.

The information in this blog is for general information purposes only and does not purport to be comprehensive or to provide legal advice. Whilst every effort is made to ensure the information and law is current as of the date of publication it should be stressed that, due to the passage of time, this does not necessarily reflect the present legal position. Gherson accepts no responsibility for loss which may arise from accessing or reliance on information contained in this blog. For formal advice on the current law please do not hesitate to contact Gherson. Legal advice is only provided pursuant to a written agreement, identified as such, and signed by the client and by or on behalf of Gherson.

©Gherson 2026

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