Our Private Investigation Services

​We offer a full range of investigative services in Newcastle, tailored to your situation and carried out lawfully and professionally.

Infidelity Investigations Newcastle

If you are concerned about a partner’s behaviour, we provide discreet infidelity investigations to establish the facts. Through professional surveillance and evidence gathering, we deliver clear, factual reporting so you can make informed decisions.

👉 Learn more: What is an infidelity investigation?

Surveillance Services Newcastle

Our surveillance investigators in Newcastle carry out targeted operations to obtain accurate, time-stamped evidence. This may be required for personal matters, legal disputes or business investigations.

All surveillance is conducted lawfully, with minimal intrusion and complete discretion.

Background Checks Newcastle

Our background check services help you better understand an individual’s history, associations or activities. This service is often used in both personal and professional situations where clarity is required before making important decisions.

Welfare Checks Newcastle

We carry out sensitive and discreet welfare check investigations where there are concerns about an individual’s safety or wellbeing.

👉 Learn more: What is a welfare check investigation?

Anti-Social Behaviour Investigations Newcastle

We provide anti-social behaviour (ASB) investigations for landlords, housing providers and private clients experiencing ongoing nuisance or disruption.

Our evidence can support tenancy enforcement and legal proceedings.

👉 Learn more: What is an anti-social behaviour investigation?

Specialist Landlord Investigation Services

SIASS Newcastle supports landlords with a range of property and tenant investigation services, including:

• Occupancy checks

• Subletting investigations

• Tenant activity monitoring

• Evidence gathering for tenancy breaches

• Support for eviction proceedings

👉 Learn more: What specialist services do SIASS offer landlords?

Why Choose SIASS Newcastle?

When you need a private investigator in Newcastle, trust and reliability are essential. We provide:

• Direct access to an experienced investigator

• Discreet and confidential service at all times

• Clear, honest advice with no obligation

• Fast response across Newcastle and surrounding areas

• Evidence suitable for legal and professional use

We focus on delivering accurate results that allow you to move forward with confidence.

Our Approach to Private Investigations

We understand that contacting a private detective in Newcastle is often a difficult decision. Our approach is straightforward and professional:

1. You contact us in confidence

2. We discuss your situation and requirements

3. We provide clear advice and next steps

4. If you proceed, we carry out the investigation discreetly

5. You receive a detailed report with evidence

Our aim is to make the process clear, controlled and stress-free.

Areas We Cover

We provide private investigation services across Newcastle upon Tyne and the wider North East, including:

• Gateshead

• Sunderland

• North Shields

• South Shields

• Durham

• Surrounding areas within Northumberland

Our local knowledge allows us to operate efficiently and respond quickly to enquiries.

Contact a Private Investigator in Newcastle

If you need advice or want to discuss your situation, contact SIASS Newcastle today.

• Speak directly with an investigator

• All enquiries handled in strict confidence

• No obligation to proceed

Call now or submit an enquiry to get started.