About Us

Who we are

Specialist Investigations is run by Mark Williams-Thomas a high-profile, former detective, and Martin Kayes, a highly experienced cyber crime specialist.

Between them, they have been involved in countless investigations both domestically and abroad and have been instructed in some of the country’s most complex investigations.

Their combined experience enables them to utilise and draw upon the support of a highly specialist team of investigators some of which are leaders in their field.

Meet the team

Mark is a former police detective and a criminologist who has far-reaching experience of working at the centre of high-profile investigations and undertaking major reviews.

He is a multi award winning investigative journalist and broadcaster and has amongst his awards two Royal Television Society Awards, a Broadcasting Press Guild Award and an International Peabody Award. He is also BAFTA nominated.

Mark has over the last decade reported on nearly all of the biggest crime stories including: Oscar Pistorius, The Alps murders, Tia Sharp murder, Claudia Lawrence murder, the murder of Alice Gross and the disappearance of Madeleine McCann.

One of Mark's greatest skills is his ability to get exclusive access and interviews with key people related to the cases.

Alongside Mark’s television and media work he also runs a number of high-profile investigations which attract no media attention. His level of confidentiality and trust he builds is what enables him to undertake so successfully the work that he takes on.

Martin is a highly experienced cyber security consultant and cyber crime investigator. He has over 23 years experience and holds the industry-leading accreditation of Certified Information Systems Security Professional (CISSP) as well as being a qualified Government Cyber Essentials Assessor.

Martin is a Dark Web and Cybercrime subject matter expert who also specialises in all things technical, including forensics, tracing and locating of people, tracking crypto currency transactions and the detailed analysis of evidence in all types of criminal cases.