Infidelity and Relationship Investigations

Discreet and Professional Private Investigations Across the UK

At On The Case, we understand that concerns about trust or infidelity can be deeply personal and emotionally challenging. Our experienced private investigators provide discreet, confidential and factual investigations to help you find clarity and make informed decisions about your relationship.

When Doubt Becomes Uncertainty

Suspicions of a partner being unfaithful can cause stress and confusion. Whether it’s unexplained absences, changes in behaviour or inconsistencies in their story, these doubts can weigh heavily on you. Our role is to uncover the truth with professionalism, sensitivity and complete discretion — never judgment.

We gather reliable evidence that gives you the confidence to move forward, whatever the outcome.

Our Infidelity Investigation Services

Our tailored relationship and infidelity investigations include:

• Surveillance to confirm movements, meetings or activities

• Digital research and open-source intelligence (OSINT) to identify online behaviour and connections

• Background checks to verify identities or reveal hidden information

• Photographic or video evidence gathered lawfully and discreetly

• Detailed reporting suitable for personal or legal use

All evidence is obtained in compliance with UK privacy and data protection laws.

Discreet, Compassionate and Confidential

We recognise that every situation is unique. Our investigators approach every case with empathy, professionalism, and strict confidentiality.

From your first enquiry to the final report, your privacy is our highest priority. You’ll receive honest communication and clear updates throughout the investigation — with your instructions guiding every step.

How It Works

1. Private Consultation – We discuss your concerns in confidence and outline your options.

2. Investigation Plan – We agree an approach that suits your circumstances, budget and level of discretion.

3. Evidence Gathering – Our investigators discreetly collect factual evidence.

4. Detailed Report – You receive a clear, factual summary supported by photographs or other relevant material.

Why Choose On The Case

• Experienced former police investigators

• Discreet and lawful investigative techniques

• Transparent reporting and communication

• UK-wide coverage with a rapid, confidential response

When you need answers, On The Case delivers truth you can trust.