Released Under Investigation (RUI) in the UK: What It Means and What Happens Next

What Does “Released Under Investigation” Mean?

Released under investigation, often called RUI, usually means you have been released from police custody without charge while the investigation continues.

Instead of keeping the individual in custody or releasing them on bail, the police may release them while they continue to investigate the case. 

This means: 

• The investigation is still ongoing 
• Police enquiries are continuing 
• A charging decision has not yet been made 

You will usually be informed of the outcome of the investigation at a later stage. 

RUI should not be treated as the same as no further action. Until the police confirm that the case is closed, the investigation remains active.

Why Do Police Release Someone Under Investigation?

Police may release someone under investigation where they are not ready to charge, but they believe further enquiries are needed.

Further Evidence Gathering

Police investigations often require additional evidence. This might involve: 

• Reviewing digital devices 
• Analysing documents 
• Conducting further interviews 

These enquiries can take time. 

Forensic Testing

Some cases require forensic work before a decision can be made.

• DNA testing 
• Fingerprint analysis 
• Digital forensic analysis 

These processes can take weeks or months before results are available. 

Witness Statements

Police may also need to: 

• Locate witnesses 
• Obtain written statements 
• Review CCTV footage 

In serious or complex cases, the investigation may need to be reviewed carefully before any charging decision is made.

Released Under Investigation vs Police Bail

People often confuse released under investigation (RUI) with police bail, but the two are very different. 

Police Bail

Police bail involves: 

• A return date to the police station 
• Possible bail conditions 
• Restrictions on certain activities 

Examples of bail conditions may include: 

• Not contacting specific individuals 
• Living at a particular address 
• Not entering certain locations 

Released Under Investigation

By contrast, RUI generally involves: 

• No return date 
• No bail conditions 
• Ongoing investigation 

The police may still contact you later if they need: 

• Further interviews 
• Additional evidence 
• To inform you of a charging decision 

What Happens While You Are Under Investigation?

While you are released under investigation, police may continue working on the case behind the scenes. 

Typical investigative steps include: 

• Reviewing interview recordings 
• Analysing digital evidence 
• Gathering witness testimony 
• Consulting forensic experts 
• Preparing evidence files for prosecutors 

In more serious cases, the police may refer the case to the Crown Prosecution Service (CPS) for a charging decision. 

If the case is referred to the CPS, prosecutors will consider whether there is enough evidence and whether prosecution is in the public interest.

Possible Outcomes of a Police Investigation

There are several possible outcomes once the investigation has been completed. 

No Further Action (NFA)

The police may decide that there is insufficient evidence to proceed. 

If this happens, the investigation will end and the matter will usually be closed with no further action. 

Caution or Alternative Disposal

In some cases, police may decide that a formal prosecution is not necessary. 

Alternative outcomes may include: 

• A caution 
• A community resolution 
• Another out-of-court disposal 

These outcomes depend on the circumstances of the case and the nature of the alleged offence. 

Criminal Charge

If the police and prosecutors believe there is sufficient evidence, you may be formally charged with a criminal offence. 

This could lead to: 

• A court appearance 
• Criminal proceedings 
• Trial in the Magistrates’ Court or Crown Court 

At this stage, it is essential to have experienced legal representation.

What Should You Do If You Are Released Under Investigation?

If you have been released under investigation, you should take the situation seriously.

You should: 

• Avoid contacting potential witnesses 
• Preserve any evidence that may assist your defence 
• Seek legal advice as early as possible 
• Respond promptly to police communications 

Even without bail conditions, your actions during the investigation may become relevant later.

How a Criminal Defence Solicitor Can Help

A solicitor can help you understand what RUI means and what steps may be needed while the investigation continues.

A criminal defence solicitor can: 

• Communicate with the police on your behalf 
• Monitor the progress of the investigation 
• Advise you on your legal position 
• Prepare a defence strategy if charges are considered 

Early legal advice can help reduce uncertainty and ensure that your position is protected while the investigation remains open.

If you have been released under investigation, obtaining legal advice as soon as possible can provide clarity, reassurance and strategic guidance during what can be a highly uncertain time.