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How the CPS Makes Charging Decisions in Sexual Offence Cases

How the CPS assesses evidence and decides whether to charge in sexual offence cases.
Adam Rasul – Holborn Adams director, criminal defence lawyer
Adam Rasul
April 30, 2026
what evidence do cps need to charge

Table of Contents

In sexual offence investigations, the charging decision is the defining turning point. Yet it is rarely made in isolation. Rather, it is a clear reflection of the narrative built during the early stages of the investigation. 

Who defines that narrative? That depends on who you have (or don’t have) on your side.

The Decision That Changes Everything

CPS charging decisions determine whether a case moves forward to court or ends with no further action. For the person under investigation, this result can have a profound impact on their life, reputation, and future.

Many people assume that an allegation always results in a decision to charge a suspect, but this stems from a misunderstanding of the process. In reality, the Crown Prosecution Service (CPS) follows a structured, carefully defined approach when deciding whether to prosecute a criminal offence.

Understanding this not only reveals how cases are built but also where they can be challenged.

Sexual Offences Act 2003 and CPS Charging Standards

Sexual offence cases in England and Wales are primarily governed by the Sexual Offences Act of 2003. This legislation sets out the legal definitions for a wide range of crimes. It also forms the foundation for how allegations are assessed and prosecuted.

However, the law alone does not determine whether a case proceeds. Prosecutors must also follow internal guidance known as CPS charging standards. These help ensure that decisions are consistent and grounded in clear legal principles, while aiding prosecutors as they apply the law to the facts of each case.

It’s important to remember that the CPS operates independently from the police. Where police officers investigate allegations and gather evidence, it is the CPS that ultimately decides whether there is enough evidence to charge.

Put simply, it is not enough for an allegation to exist. The evidence must meet specific criteria before a case can move forward.

CPS charging decisions

The Two-Stage Decision-Making Process

At the heart of all CPS charging decisions is the Full Code Test. This is a process that prosecutors must apply before bringing charges. It consists of two stages:

Evidential Stage: Is There a Realistic Prospect of Conviction?

The first stage focuses on the evidence. Prosecutors must decide whether there is a “realistic prospect of conviction.” This means they must consider whether a jury is more likely than not to find the defendant guilty based on the available evidence.

However, the answer is not as straightforward as many people expect. In some situations, even limited or circumstantial evidence may be enough to meet this threshold.

Public Interest Stage: Is Prosecution Appropriate?

The second stage of the Full Code Test looks at whether it is in the public interest to prosecute. In most sexual offence cases, the answer is yes. The seriousness of the allegations means that once the evidential stage is met, prosecution is usually seen as appropriate.

This makes the evidential stage the key battleground, and the point at which proactive defence can make the greatest impact. Once the threshold is met, a case is likely to proceed. That’s why solicitors must identify and challenge any weaknesses, gaps, or assumptions early.

What Evidence Does the CPS Need to Charge?

To understand CPS charging decisions, it’s important to examine the types of evidence on which prosecutors rely. In sexual offence cases, this evidence is often complex, varied, and heavily dependent on how different elements interact with one another.

Complainant Accounts

One of the most consistent and influential elements is the complainant’s account. This is often recorded through an ABE (Achieving Best Evidence) interview, which captures their version of events in detail and frequently forms the foundation of the case.

The way investigators structure, deliver, and interpret this account can significantly impact how they assess the evidence.

Witness Statements

Alongside the complainant’s account, police will gather witness statements from individuals who may have relevant information. These statements can support, contradict, or add context to the central allegation.

Even when witnesses did not directly observe the alleged incident, their evidence can still influence how events are understood.

Digital Evidence

Digital evidence is becoming increasingly important in sexual offence investigations. Authorities often use messages, social media activity, location data, and metadata to construct timelines and assess interactions between parties.

This type of material can either support or undermine an account, but it is rarely complete and must be interpreted carefully.

Physical and Forensic Evidence

In some cases, there may also be physical or forensic evidence, such as medical findings, DNA, or other scientific material. While this can be highly influential, it must still be considered alongside other evidence rather than in isolation.

The “Offender-Centric” Approach

Recent years have seen a shift towards an “offender-centric” approach in UK sexual offence cases. This means that investigators and prosecutors place greater focus on the suspect's behaviour rather than the complainant's credibility.

This approach can significantly influence how evidence is interpreted. For example, instead of asking whether the allegation is believable, the CPS may shift its focus to patterns of behaviour, communication, and conduct.

For suspects, this often means increased scrutiny, especially of digital evidence. Investigators may choose to analyse messages, interactions, and timelines in greater detail, hoping to identify behaviour that supports the allegation.

While this approach aims to improve outcomes in certain cases, it also carries risks. Focusing on the offender can shape how investigators view the evidence, sometimes reinforcing an existing narrative rather than challenging it.

Influencing the Case Before It Reaches the CPS

By the time the CPS reviews a case, much of the groundwork has already been laid. After all, it’s the police investigations that shape the material presented to prosecutors, with early evidence—such as interviews, witness statements, and digital data—forming the foundation.

The local authorities then compile this information into a file that the CPS relies on when making its charging decision. At this stage, there is already a clear risk that a narrative has begun to take hold.

Once investigators form a working theory, they may focus only on evidence that supports it, which can influence what they present to the CPS. Basically, the CPS decision is only as strong as the material it receives. If that material is incomplete, selective, or biased, it can significantly affect the outcome.

Why Timing Is Critical in CPS Charging Decisions

Timing plays a crucial role in all of this. Once a case has been charged, the focus shifts to preparing for trial. At that point, the narrative is often well established, and challenging it can be extremely difficult.

While it is still possible to contest the evidence in court, the opportunity to have the charges dismissed entirely is long gone. Even a skilled team of solicitors and barristers may struggle to achieve the best outcome.

The Power of Pre-Charge Engagement

Pre-charge engagement is the best option when it comes to mounting a solid, reliable defence. 

By acting early, defence solicitors can identify inconsistencies in witness accounts, scrutinise how interviews were conducted, and test digital timelines for gaps or contradictions. 

The defence can also introduce new evidence, such as alternative timelines, digital records, or third-party accounts, to present a more balanced picture. By doing so, they can reshape how the case is viewed and, in some instances, prevent it from reaching the evidential threshold required for a charge.

Why Holborn Adams Makes the Difference

Understanding how CPS charging decisions are made is essential for anyone facing a sexual offence allegation. While it’s true that these decisions are not based on belief, the process is not without its risks. 

Early evidence, initial narratives, and investigative approaches can all influence the outcome. If these factors go unchallenged, even weak cases can end up going to trial.

Holborn Adams specialises in pre-charge engagement. In fact, we helped pioneer it across the UK. As such, our team can provide proactive legal support at the most critical stage of the process.

By challenging evidence, reframing narratives, and engaging directly with investigators and prosecutors, we work to influence outcomes before decisions are finalised. 

If you’re charged with a sexual offence, don’t leave your fate and freedom up to chance.

Call Holborn Adams.

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