Greyline is a UK-registered private intelligence firm. We investigate quietly, document properly, and deliver findings that clients, courts, and counter-parties can rely on.
Every Greyline engagement is led by an analyst, scoped against your specific facts, and reported to evidential standard. Where specialist accreditation is required, we engage tested delivery partners under our scoping and quality control.
Quiet, documented inquiry into the people who matter most, partners, prospective spouses, those targeting you online, and those threatening your safety.
Explore →Pre-hire vetting, vendor and supply-chain risk, pre-investment diligence, and the intelligence businesses need before they commit capital or trust.
Explore →Investigation into fraud, hidden assets, and financial deception, for individuals targeted by scams, businesses defending against loss, and litigation.
Explore →Open-source intelligence, dark web exposure monitoring, adverse media screening, and the digital trace work that underpins every other discipline.
Explore →Penetration testing, vulnerability assessment, and social engineering testing, scoped against the exposure our intelligence work surfaces.
Explore →Investigative support for solicitors and family offices, asset tracing, expert witness work, witness location, and pre-investment due diligence.
Explore →Greyline operates a single, considered intake process. Every engagement begins with a confidential inquiry, submitted through our encrypted form and proceeds to a written scope before any work is committed.
Use the encrypted intake form on our inquiry page. Provide a high-level summary of your situation, no sensitive evidence required at this stage. An analyst, not a salesperson, reviews every submission.
Within two business days, we arrange a 30-minute discovery call to understand the matter properly, identify what is and isn't within scope, and explain how we would approach the work.
You receive a clear written engagement letter setting out the work, the deliverables, the timeline, and the fee. Nothing is committed until you sign and return it.
Once the engagement letter is signed and the retainer received, work begins immediately.
All inquiries are handled under strict confidentiality protocols. Submit a high-level summary, no sensitive material at this stage. A confidentiality agreement is provided before any detailed disclosure.