top of page

Inquire now for a FREE consultation with a confidential private investigator at SPI

private investigator Grantham

Private Investigator & Detective Agency Grantham  

Hire a Private Investigator Grantham

Contact SPI if you require professionally managed private investigator services in Grantham. We offer free, no-obligation consultations and confidential, efficient investigation services. In addition to serving the private sector, we also offer corporate investigations to the business community in Grantham and the rest of the East Midlands. SPI is pleased to provide expert investigative services at fair pricing compared to the industry standard. 

SPI Professional Associations

ABI Logo

Association of British Investigators

Armed forces covenant bronze award

Armed Forces Covenant Bronze Awarded

UK PIN logo

UK Private Investigators Network

Who We Are as Private Detectives Grantham

private detective Grantham

The managing director of Sentry Private Investigators has a significant military history with the British Army/Infantry. Following time served with HMForces, achieving the rank of Full Corporal and operational deployments to some of the worlds most dangerous places, the time had come to transition into a new career in the renowned and thrilling field of private investigations.

Just after national lockdown restrictions were lifted in 2021, SPI was established. Nevertheless, since 2013, the managing director has been actively engaged in carrying out both live private and corporate investigations in Grantham, across the East Midlands and throughout the UK.

In terms of covert surveillance operations and open source investigations (OSINT), SPI have seamlessly established a reputation for offering leading  private detective services in Grantham where excellent results are regularly achieved.

  • Facebook Logo
  • Instagram Logo
  • Twitter Logo
  • LinkedIn Logo

Private Investigator Grantham Services

Private Investigator Grantham Questions and Answers
private detective agency Grantham

Q. What services do Grantham private investigators offer?

A. Both the private and corporate sectors are catered to with our private investigator Grantham services. SPI have a solution for all your investigation needs, from covert surveillance activities to open source information gathering. Visit our Investigative Services page for further details.


Q. Can Sentry Private Investigators reveal if my partner is having an extramarital affair?

A. SPI specialises in the use of GPS vehicle trackers and covert surveillance operations. The best approach to determine whether your spouse is being unfaithful is by utilising these methods of evidence gathering


Q. What can I anticipate once I contact a private detective in Grantham?

A. One of our knowledgeable and friendly case handlers will take your call when contacting SPI. They will review your circumstances and offer you advice on how to move forward with your confidential private investigation.

private investigators in Grantham
Values and Standards of a Private Investigator in Grantham


Our private investigator Grantham services are delivered with integrity and professionalism on all accounts


Our private investigations are conducted with robust ethical standards and accountability at all levels


The private investigator Grantham services we provide are in compliance with UK privacy and data protection laws


A quality service at a cost effective price is what we deliver with both our private investigations and corporate investigations

bottom of page