Sexual Offences – Proactive Defence when under Investigation

Why proactive defence is critical in sexual offence investigations 

Being investigated does not mean you will be charged. The outcome of a sexual offence case is often shaped long before any charging decision, and effective defence work during the investigation can influence whether a charge is ever brought. That is what proactive defence means, and it is where Olliers concentrates its effort. 

Facing a sexual offence allegation is one of the most distressing situations a person can experience. Liberty, reputation, employment, family life and friendships can all feel at risk. But a police investigation is not a fixed process leading inevitably to prosecution: it is a developing assessment of evidence, and decisions made during this stage can be influenced. 

If you are unsure how the process begins, our guide on what happens after a sexual offence allegation is made explains the early stages. 

What is proactive defence? 

Proactive defence means taking active steps at the earliest stage of an investigation to protect your position and challenge the allegation. Rather than waiting to react to a charge, a proactive approach focuses on: 

• Identifying evidence that supports your account 
• Challenging inaccuracies or misunderstandings early 
• Presenting material to the police before charging decisions are made 
• Ensuring your version of events is properly considered 

In many cases this work takes place during pre-charge engagement, a process in which your solicitor communicates directly with investigators as an investigation progresses. Read more in pre-charge engagement and sexual offences. 

Why early intervention can change the outcome 

At the investigation stage, the police and the CPS are asking one question: is there a realistic prospect of conviction? That decision depends entirely on the evidence available at the time (see our charging guidance). If relevant material is missing, misunderstood or presented too late, a case may proceed unnecessarily, and by the time a charge is brought the position is much harder to reverse. 

A proactive defence will highlight weaknesses in the allegation early, direct lines of enquiry, provide alternative explanations supported by evidence, prevent important material being overlooked, and influence whether a case proceeds to charge at all. 

We will always look to initiate early pre-charge engagement, followed by comprehensive representations against charge, arguing that the charging standard in the Code for Crown Prosecutors is not met because there is no realistic prospect of conviction, and that the case should be NFA’d (no further action). 

If you are under investigation it also helps to understand pre-charge bail in rape cases and how long restrictions can apply. 

The importance of evidence, and acting quickly 

Modern sexual offence investigations often rely heavily on mobile phone data and messaging, social media activity, CCTV or location information, third-party records, and medical or forensic evidence. This material is not always preserved indefinitely: messages can be deleted, footage overwritten, digital records harder to access over time. Delay can lead to lost evidence. 

A proactive approach ensures relevant material is identified early, preserved, and presented in a way that supports your defence. Understanding the role of medical and forensic evidence in rape allegations or of digital evidence can be crucial in shaping a case. 

Challenging assumptions at an early stage 

Sexual offence investigations are complex and highly sensitive, and early assumptions can shape the direction of an enquiry. Without early legal involvement, lines of enquiry may remain untested, context may be missed, and evidence may be interpreted in a one-sided way. A proactive defence ensures the investigation considers all relevant material, your account is properly represented, and inconsistencies or gaps in the allegation are identified. 

This is particularly important where consent is central: our guide on how the law defines consent in rape cases explains how these issues are assessed. 

False or misleading allegations 

Not every allegation is straightforward. Cases can arise from misunderstandings, relationship breakdowns, external pressures or incomplete accounts of events. A reactive approach risks allowing a narrative to develop unchallenged; a proactive strategy examines the background to the allegation, tests the reliability of the account, and identifies evidence that contradicts or undermines the claim. 

• Why do false sexual allegations happen? 

• The impact of false allegations 

Investigations can be long and uncertain 

Sexual offence investigations can take months or even years, with bail conditions or restrictions, uncertainty, and significant personal and professional impact along the way. Taking control early makes a substantial difference, both legally and practically. 

Our approach at Olliers 

At Olliers we are known for an early, proactive and strategic approach to defending sexual offence allegations. We do not wait for events to unfold: we take control, pre-empt issues and build a defence strategy from day one. Our focus is always to intervene as early as possible, identify and secure key evidence, make effective pre-charge representations, and prevent cases progressing where appropriate. 

We are ranked as a top tier defence and regulatory firm by the Legal 500 and the Chambers Guide. In 2025 we won Crime Team of the Year at the Manchester Legal Awards for the eighth time since 2011, and we are a Times Best Law Firm 2026. Our Managing Director Matthew Claughton is the 2023 Legal 500 Northern Powerhouse Criminal Lawyer of the Year and the only two-time Partner of the Year at the Manchester Legal Awards. Our team places huge emphasis on the pre-charge stage of a case, with hundreds of successful outcomes where investigations have been stopped in their tracks. We also bring detailed understanding of complex and sensitive allegations, including grooming and group-based exploitation cases and historic cases. 

When should you seek advice? 

As soon as you become aware of an allegation, including if: 

• You are contacted by the police 
• You are asked to attend an interview, voluntary or under arrest 
• You become aware that someone has made a complaint 
• You have already been interviewed and released, and now want to do something about it 

Early advice does not make a situation worse; it helps you take control of it. 

If you or someone close to you is facing a sexual offence allegation, contact our specialist team in confidence.