Philip Grindell MSc CSyp

Founder & CEO

Philip Grindell has a MSc in Security Management and is one of only 300 Chartered Security Professional (CSyP) globally. 

He founded the consultancy Defuse in 2019,  specialising in countering threatening & concerning behaviours & approaches from problematic people to corporate & private clients.

Philip has rapidly became known as the UK thought leader in Protective Intelligence, Behavioural Threat Management and the protection of prominent figures, regularly commenting on this subject in the media.

Philip appears in both Spears 500 and the Tatler Address Book as a recommended adviser for the UHNW and Private Client communities. 

Previously, Philip served as a Scotland Yard Detective in the Metropolitan Police Specialist Operations Command for 30 years, during which he was seconded to British Intelligence for 3 years.

Following the assassination of Jo Cox MP in 2016, Philip was responsible for setting up the new protective intelligence and investigative team in the UK Parliament and identified the next attack being planned in 2017, preventing an MP and a Police Officer from being attacked.

As a former Counter Terrorist Security Coordinator, he was responsible for the security plans protecting numerous events with the British Royal Family, Military and Government.

Philip launched The Online Bodyguard podcast in 2022 bring together globally renowned experts to discuss the latest research and practices that ensure the safety of private clients and prominent people.


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Dr Lorraine Sheridan Phd


Dr Lorraine Sheridan Phd is Defuse’s Chartered Forensic Psychologist, completing Europe’s first PhD on stalking. She is recognised as a global expert on stalking and harassment and several other forensic psychological topics. Lorraine has published five books and more than 80 papers in refereed scientific journals. She is an accredited offender profiler and compiles psychological reports related to offenders, highlighting the risks posed by known or unknown suspects. Lorraine was formerly a senior academic in Perth, Western Australia where she was the former President of the Asia Pacific Association of Threat Assessment Professionals.

Lorraine lives with her husband and children and supports Leicester City Football Club. 


Supporting our team are consultant analysts and professionals personally selected for their expertise and often unique skill set. Our specialist team includes experienced investigators, linguists and data analysts

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For more information about our security and reputational management services, please give us a call on +44(0)207 293 0932