When a sexual offence is alleged to have occurred in London and involves a physical offence – such as rape allegations or sexual assault – the Metropolitan Police will normally take responsibility for the investigation, even if the suspect lives elsewhere.
In online allegations – such as sexual communication with a child or offences involving indecent images – investigations are usually handled by the police force local to the suspect’s home address. This means the Metropolitan Police will typically only investigate where the suspect lives within London.
For many people, the first indication that they are facing a sexual offence allegation is the sudden shock of arrest. It is only by arresting someone that the police have the power to seize electronic devices or impose bail conditions.
How the Metropolitan Police Structure Sexual Offence Investigations in London
Allegations of rape and serious sexual assault are investigated by dedicated RASSO teams – Rape and Serious Sexual Offences units – operating across Borough Command Units. These officers are trained for complex sexual offence investigations and cases are subject to structured supervision and internal review.
Not all sexual offences fall within RASSO. Allegations involving possession of indecent images of children or online sexual communication with a child are typically investigated by specialist Online Child Abuse Investigation Teams (OCAIT).
Operation Soteria and the Shift in Approach
Operation Soteria introduced significant reforms to the way rape and serious sexual offences are investigated across England and Wales, including within the Metropolitan Police. The framework promotes what is described as a “victim-centred” culture, with reduced early scrutiny of the complainant’s credibility and greater emphasis on digital material and the wider context.
From a defence point of view, that shift carries significant concerns, particularly where an allegation is strongly denied. The credibility of the complainant’s account, potential inconsistencies, and the timing or motive behind an allegation are fundamental defence considerations. These are reasonable lines of enquiry which the Met police may not prioritise at the outset. This is why we focus on a proactive defence, gathering evidence at an early stage and drawing attention to key issues for the investigating officer to consider.
What Happens After Arrest and Interview
After the interview has taken place, the police decide whether to release the suspect on bail, usually with bail conditions or to Release Under Investigation (RUI).
Either way, the officer in charge will continue with the investigation. Typically, this is a very early stage in the process, and the bulk of the work remains to be completed.
Ongoing Evidence Gathering
In cases involving a complainant, the police may initially have only a preliminary account and may not yet have completed a formal Video Recorded Interview (VRI). Further witness statements may need to be obtained from individuals to whom the allegation was first disclosed. If the allegation arises from a referral from a social media platform – police may need to go through their legal teams, which can cause delays in getting the full range of digital evidence.
Electronic devices almost always need to be sent off for examination. Digital forensic analysis can take many months, particularly where multiple devices are seized. The Metropolitan Police operate within a high-volume environment, and digital backlogs are a common feature of serious sexual offence investigations.
Officers will also continue gathering evidence from other sources. In London, this may include CCTV from buses, venues, street cameras or transport networks, witness statements and movement data across boroughs.
Police Bail and Extensions
The police routinely impose bail conditions in sexual allegation cases, and the wording is often standardised. Where there is a complainant, a non-contact condition in relation to them is imposed. There may also be prohibitions on unsupervised contact with children under 18.
In practice, these conditions are frequently framed broadly and applied in a similar form across cases. That can create a disproportionate impact, where the allegation does not suggest a particular cross-over risk. For example, restrictions affecting contact with children of a different age group from that involved in the allegation may be imposed as a precaution rather than on the basis of a specific concern.
In London, bail conditions can also be geographically wide in scope. Exclusion from a borough or central area can have significant practical consequences for work and family life.
The police impose an initial three-month period of bail, which can be extended to six months with the approval of a superintendent. After that point, any further extension must be authorised by the Magistrates’ Court.
Release Under Investigation (RUI)
Where a suspect is released under investigation rather than on bail, there are no formal conditions. However, the investigation continues in the same way. The absence of bail conditions does not indicate that a case is nearing conclusion or is evidentially weaker.
Safeguarding and Social Services Involvement
In cases involving allegations connected to children, social services referrals are made by the police. That safeguarding process runs alongside the criminal investigation and can have immediate and significant practical consequences.
Often it is only possible to get the police to agree to a bail condition allowing return to the home address once social services have completed their assessment and confirmed they have no objection.
How Long Do Metropolitan Police Sexual Offence Investigations Take?
There is no fixed timeframe for a sexual offence investigation in London – much will depend on the type of allegation, the volume of digital evidence and even the work ethic of the officer in charge.
Metropolitan Police investigations into serious sexual offences tend to take many months, and officers will often hesitate to discontinue even weaker cases due to pressure to be seen to treat sexual allegations seriously. The system also allows complainants to pause the progress of a complaint and later re-engage, which can deter rushed decisions.
For suspects, it is the uncertainty that causes much of the anxiety. As bail dates approach, there may be no indication whether a further interview is likely or whether bail will be extended again.
Defending a Sexual Offence Investigation
Our role involves maintaining contact with the investigating officer and keeping our clients informed as the investigation unfolds, reducing uncertainty wherever possible.
We also always consider how to defend the allegations proactively by identifying all potential sources of defence evidence and examining the weaknesses in the prosecution case. In some cases, well argued written representations to the investigating officer can be the deciding factor in preventing charges.
For immediate assistance, contact our London sexual offence solicitors by calling us at 0333 240 7373 or email [email protected] or send an enquiry through our contact form.
