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A high-level guide to UK prosecutorial and enforcement agencies

Posted: 14/08/2019


It is now widely accepted that financial crime is not ‘victimless’, but rather is wrongdoing which has a pervasive detrimental effect on legitimate commerce, and civilised society in general. As a result of this, many jurisdictions have introduced legislation establishing broad anti-financial crime regimes, policed by expert law enforcement agencies often possessing special investigative and prosecutorial powers.

In the last seven years, the UK has developed a reputation for possessing an increasingly capable and active enforcement environment. As such, it is important that those conducting business in, with, or where there is a factual connection to, the UK, have a base knowledge of the authorities they may be dealing with, should their activities come under investigation. This is not an exhaustive list of UK investigatory and enforcement bodies (others include the Insolvency Service Criminal Enforcement Team, the Financial Reporting Council, and the Environment Agency) but does deal with those that are most likely to be relevant to organisations doing business in the UK.  

The Serious Fraud Office

Established by virtue of the Criminal Justice Act 1987 (CJA), the SFO began operations in 1988. This body generally only deals with the most serious and complex cases of fraud, bribery and corruption that require the application of the SFO’s “specialist skills, powers and capabilities”. It instigates or intervenes in only a small number of cases which it adjudges harm, or are intended to cause significant harm to the public; “the reputation or integrity of the UK as an international financial centre”; or “the economy and prosperity of the UK”. Whether to investigate and instigate proceedings is a matter for the discretion of the head of the SFO, the director (currently former Federal Bureau of Investigations deputy general counsel, Lisa Osofsky). The director of the SFO also has the power to take over the conduct of matters meeting the above criteria, from other law enforcement agencies, at any stage.

The SFO is unusual, at least in comparison to most UK law enforcement agencies, in that it both investigates and prosecutes criminal wrongdoing. As part of its investigatory role, it conducts specialist forensic activities in respect of data and accounting. To that end, it has on staff a number of experienced investigators, barristers, solicitors, accountants, data scientists, and IT professionals, amongst others.

The SFO possess a number of powers which differentiate it from other UK law enforcement bodies. Most notable is that colloquially known as the “Section 2 notice” (so called due to its origin being s 2 of the CJA). Under ss 2(2) and 2(3) of the CJA, the director of the SFO, may:

  • “by notice in writing require [a] person whose affairs are to be investigated…or any other person whom he has reason to believe has relevant information to answer questions or otherwise furnish information with respect to any matter relevant to the investigation either at a specified time or forthwith”; and
  • “by notice in writing require the person under investigation or any other person to produce at such place as may be specified in the notice and either forthwith or at such time as may be so specified, any specified documents which appear to the director to relate to any matter relevant to the investigation or any documents of a specified description which appear to him so to relate, and if any such documents are produced, the director may take copies of extracts from them and require the person producing them to provide an explanation of any of them”.

Section 2 notices can require the provision of documents, written responses, or attendance at interview. The recipient of a section 2 notice cannot refuse to answer the matters raised therein including by stating “no comment”. The only lawful excuse for declining to answer a question asked under the powers granted to the SFO in s 2 CJA is that to do so would constitute a waiver of privilege.

Whilst this requirement may seem draconian, the effect is somewhat mitigated by the fact that those invited to section 2 notice interviews are typically witnesses rather than suspects. Further comfort can be taken from the provision that any answer given in response to a question in a s 2 interview cannot be used against the interviewee in criminal proceedings (save for in criminal proceedings brought against the interviewee because the answers provided were misleading). Given this, case law has established that those attending section 2 notice interviews do not possess an absolute right to have a lawyer attend with them, although one may be (and frequently is) permitted to attend, at the SFO’s discretion.

Non-compliance with a s 2 notice requiring the production of documents may lead the SFO to seek a warrant authorising the police to enter premises and seize the relevant materials. S 2(13) CJA also provides that simple failure to comply with s 2 CJA is a distinct criminal offence, as is knowingly or recklessly making a materially false or misleading statement in response to a request made under s 2 CJA (pursuant to s 2(14)).

Whilst the SFO therefore possesses significant investigatory tools at its disposal, there are certain powers it does not possess, such as the power of arrest. However, pursuant to s 1(4) CJA, the director may, if she “thinks fit, conduct any such investigation in conjunction with either the police or with any other person who is, in the opinion of the director, a proper person to be concerned in it”. By virtue of this provision, the SFO may, for example, request the police make an arrest, or obtain a warrant to conduct a search. Whilst the SFO does not, strictly, have the power to direct the operations of the police under this provision, the police will, in practice, acquiesce with the SFO’s requests, save in exceptional circumstances.

Since 2016, a number of parties (mainly corporate entities) under SFO investigation have sought to challenge the agency’s powers through civil and public law avenues. These include most notably, Soma Oil and Gas, and Unaoil. In respect of both, the court found that the SFO’s powers may be exercised with wide discretion, and successful challenges to such discretion would only be possible in “highly exceptional” circumstances.

Regional police forces

There are 45 regional police forces in the UK. These bodies each have their own units dealing with particular types of crime. City of London Police, for example, have specialist fraud capability (including for example, the UK’s primary anti-fraud reporting system, 'Action Fraud’) whilst the Metropolitan Police Service has an expert ‘Art & Antiques’ unit. On particularly serious or complex matters, forces may also work together, informally, formally, or by establishing teams which draw personnel and resources from a range of different regions.

Despite each force having its own specialist capabilities, their primary role is the investigation and prevention of general crime. Fraud and other forms of financial crime are generally not an operational priority for the regional police forces, albeit that investigating and preventing it does fall within their remit.

The police have a wide and extensive range of investigatory powers, the most relevant of which are contained in the Police and Criminal Evidence Act 1984, and its associated ‘Codes’ (“PACE” and the “PACE Codes”).

Arguably the most important power conferred on the police by PACE is that contained in part III of the legislation, the power of arrest. S .24 PACE provides that a constable may exercise the power of arrest without a warrant in the following circumstances:

  • Where a person is:
    • About to commit an offence;
    • In the act of committing an offence;
    • Reasonably suspected to be about to commit an offence;
    • Reasonably suspected to be committing an offence;
  • Where it is reasonably suspected that an offence has been committed, a person who is reasonably suspected to be guilty of it; or
  • Where an offence has been committed, a person guilty of the offence, or anyone about who there are reasonable grounds for suspecting they are guilty of it.

However, the power of arrest conferred by s 24 PACE can only be exercised where one of a number of specified “reasons” are satisfied. Those reasons are:

  • To enable the name or address of the person in question to be ascertained (where the name or address is not known and cannot be readily obtained, or where the constable has reasonable grounds for doubting whether the name or address provided is the person’s real name or address);
  • To prevent the person in question:
    • Causing physical harm to himself or any other person;
    • Suffering physical injury;
    • Causing loss of, or damage to, property;
    • Committing an offence against public decency;
    • Causing an unlawful obstruction of the highway;
  • To protect a child or other vulnerable person from the person in question;
  • To allow the prompt and effective investigation of the offence or of the conduct of the person; or
  • To prevent any prosecution for the offence from being hindered by the disappearance of the person in question.

S 17 PACE also grants the police powers to enter premises to effect an arrest in certain, limited, prescribed circumstances.

In addition to the power of arrest conferred under s 24 PACE, s 1 PACE gives a constable the right, in a place other than that which amounts to private property, to search a person, vehicle, or anything which is located in or on a vehicle, if the constable has “reasonable grounds for suspecting” that doing so would cause the discovery of “stolen or prohibited articles”.

The final key power of the police is to enter a property, search it, and seize relevant material. To exercise this power, a constable must, pursuant to s 8 PACE, make an application to a Justice of the Peace that they are satisfied that:

  • An indictable offence has been committed;
  • There is material on the premises that “is likely to be of substantial value…to the investigation of the offence”;
  • That it does not consist of or include items subject to legal professional privilege, or some other specified protection; and
  • The following apply:
    • It is not practicable to communicate with any person entitled to grant entry to the premises;
    • It is practicable to communicate with a person entitled to grant entry to the premises but it is not practicable to communicate with any person entitled to grant access to the evidence;
    • That entry to the premises will not be granted unless a warrant is produced; and
    • That the purpose of a search may be frustrated or seriously prejudiced unless a constable arriving at the premises can secure immediate entry to them.

However, the police may also exercise their powers of search, without a warrant, over any premises “occupied or controlled by a person who is under arrest for an indictable offence” if a constable believes that there is on the premises material (save for that subject to the protection of legal professional privilege) relating to the offence for which the individual has been arrested, or to some other indictable offence connected or similar to that offence. When this power is exercised, the police may seize anything they find. 

Whenever a constable is on premises lawfully, they may seize anything if they have grounds for reasonably believing that it has been obtained in consequence of the commission of an offence; or that it constitutes evidence in relation to an offence which is being investigated (or any other offence), and that its seizure is necessary to prevent it being concealed, lost, damaged, altered or destroyed. Where any material is seized, the person from whom it is seized has a right to a record of what has been seized. Similarly, the person from whom the material is seized has a right to request copies of, or access to, seized material. However, pursuant to s 21(8) PACE, this right is qualified, in that there is no duty for the police to grant access to, or provide copies of, any seized material, if to do so would prejudice any ongoing investigations or ongoing or subsequent criminal proceedings.

Following arrest, the police are likely to want to interview a suspect. Such an interview should be conducted under caution. The caution will be given in the following terms: “You do not have to say anything. But it may harm your defence if you do not mention when questioned something which you later rely on in court”.

The National Crime Agency

The National Crime Agency, created by the Crime and Courts Act 2013 (CCA), is, like the SFO, a non-ministerial government department. Its focus is on serious, organised, and financial crime. In that respect, its remit has some overlap with the SFO, and indeed, the current Conservative Government was considering the NCA subsuming the SFO (albeit that those plans have now been abandoned). The NCA’s role is to prevent and reduce crime, and to gather criminal intelligence. The NCA is sub-divided into a number of “commands” and special offices, the most relevant of which are the Economic Crime Command (dealing with fraud, intellectual property, identity crime, corruption, and counterfeiting); the National Cyber Crime Unit; the Proceeds of Crime Centre; and the UK Financial Intelligence Unit.

Under s 10, the director general of the NCA may designate that any officer has the powers of a police constable; an officer of Her Majesty’s Revenue and Customs; and an immigration officer. As such, an NCA officer may possess a wide range of powers that may include: gaining entry to property; searching property and premises; seizing materials; detaining and arresting suspects; executing warrants; and conducting interviews. The NCA gains these powers through such delegation, it does not otherwise possess them in its own right. To this end, the NCA also collaborates extensively with the SFO, police, Her Majesty’s Revenue and Customs, and other UK, and international, law enforcement and regulatory bodies.

One tool the NCA (as well as the SFO, Her Majesty’s Revenue and Customs, the Financial Conduct Authority, and police forces) do nevertheless possess is that of the Unexplained Wealth Order (UWO) introduced in the Criminal Finances Act 2017 (CFA). A UWO is an order requiring a person to explain their interest in specified property, and how it was obtained. The application for a UWO is made to the High Court (a civil, rather than a criminal court) and can only be made if the court is satisfied that:

  • the respondent holds the property in question;
  • the value of the relevant property is greater than £50,000;
  • there are reasonable grounds for suspecting that the known sources of the respondent’s lawfully obtained income would have been insufficient for the purposes of enabling them to obtain the property in question; and
  • either:
    • the respondent is a politically exposed person; or
    • there are reasonable grounds for suspecting that the respondent (or a person connected with them) is, or has been involved in serious crime.

In the event that the respondent fails to comply with the UWO, or the response does not provide a satisfactory explanation, the property in question can be seized. UWOs can be accompanied by interim freezing orders, which prevent the property in question from being disposed of, whilst the respondent formulates (or fails to, as the case may be) a reply to the UWO.  

Her Majesty’s Revenue and Customs

Her Majesty’s Revenue and Customs (HMRC) has powers to investigate and take civil and criminal enforcement action against those whose conduct seeks to cheat the UK public revenue. HMRC will generally employ criminal powers, and seek criminal law remedies, where it suspects the cheating of the revenue is connected to wider criminality such as organised crime, large-scale fraud, business crime, or cases involving forgery.

Certain HMRC staff have powers under PACE, similar to those of police officers as described above, albeit subject to some modifications to meet the requirements of their particular law enforcement role. Those powers, broadly speaking, include powers of arrest, search and seizure.

The Financial Conduct Authority

The Financial Conduct Authority (FCA) is the body which regulates the UK’s financial services industry. Much like other bodies referred to in this note, the FCA pursuant to part XI and s 284 of the Financial Services and Markets Act 2000 (FSMA) has broad powers allowing it to require those under its supervision (or whose conduct falls within its regulatory perimeter) to provide it with information, and to conduct investigation into those individuals and entities (if necessary in concert with, or with the assistance of, other relevant experts or law enforcement entities).

Generally speaking, prior to the imposition of a sanction, the FCA will issue a “warning notice”. This will let the subject of the proposed enforcement action know what steps the FCA proposes to take, why, and will invite the subject to make representations prior to the actual imposition of the sanction. Should the FCA take the decision to publish a warning notice, and / or proceed with imposing a sanction on the subject, it will publish a “decision notice”, stating what action will be taken and why. This will be followed, either after the last appeal to the Upper Tribunal is completed, or if no such appeal is made, by a “final notice”. The FCA may impose a wide range of sanctions including public censure; financial penalties; and / or the removal or variation of a firm or individual’s authorisation to conduct regulated activity. For less serious, accidental, or rapidly-remediated breaches, the FCA may also issue warnings in private. 

In addition to the above, certain breaches of the FCA’s regulations may constitute criminal conduct, which the FCA has the power to investigate and prosecute, pursuant to FSMA. These offences include carrying on regulated activity without authorisation (or unless an exemption applies); inviting or inducing participation in investment activity in breach of financial promotions rules; misleading the FCA; and market abuse.


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