When something doesn’t feel right, this is who to call.

Philip Grindell MSc CSyP

Philip Grindell is a trusted risk and threat adviser to prominent individuals, families, and the advisers who support them. He is typically brought in early, when increased exposure, scrutiny, or uncertainty begins to affect judgement, behaviour, or decision-making — often before a situation is clearly dangerous.

As founder and CEO of Defuse Global, Philip advises family offices, private clients, lawyers, and strategic communications firms on how to recognise emerging personal risk and respond proportionately, discreetly, and without unnecessary disruption. His role is to help clients and advisers separate genuine concern from noise, reducing anxiety and preventing overreaction at critical moments.

Philip brings over 35 years’ experience from senior roles in UK law enforcement, counter-terrorism, intelligence, and protective security. He began his career as a Scotland Yard Detective, including a secondment to British intelligence, and later served as a Counter-Terrorism Security Coordinator, responsible for security planning around high-profile events involving members of the Royal Family and UK Government.

His approach to advisory work was shaped by real-world decision-making in high-consequence environments. After the murder of Jo Cox MP he set up and led The Parliamentary Liaison and Investigation Team. In that role he assessed the plot against Rosie Cooper MP as a genuine threat and initiated the investigation. He was trained in threat assessment by the architect of the US Secret Service methodology for assessing targeted attacks.

Most of Philip’s casework concerns personal, behavioural, and targeted threats affecting prominent individuals — including fixation, stalking, harassment, lone-actor risk, and reputationally sensitive situations. Where required, his advisory role draws on discreet investigations, behavioural threat assessment, and intelligence-led enquiries, supported by forensic psychological expertise. These tools are used selectively and in context, always in service of sound judgement rather than activity for its own sake.

Philip holds an MSc in Security Management and is a Chartered Security Professional. He is the author of Personal Threat Management (2025) and is a regular media contributor on security and threat-related issues, appearing across national television, radio, and print. He also speaks internationally to professional audiences on risk, behaviour, and decision-making under pressure.

Defuse Global is a deliberately small, specialist advisory practice that works primarily through trusted referrals. The firm is recognised in the Spear’s 500 as Top Recommended in Security, Intelligence and Investigations.

Amanda Grindell

Before joining Defuse Global, Amanda worked in the TSCM and commercial counter-espionage sector, where discretion is the operating standard rather than the marketing line.

That background shapes how she supports both Philip and the clients the firm advises. People often come to Defuse Global at moments of uncertainty or unease, sharing concerns they may not have raised elsewhere. Amanda understands that trust is built through quiet consistency — doing what she says she will do, accurately and without fuss.

She oversees operations and coordinates client engagements, making sure the work runs smoothly behind the scenes. Her international background allows her to work comfortably across regions and time zones, and her steady, attentive manner helps clients feel heard during sensitive or difficult conversations.

Dr Lorraine Sheridan, PhD

Dr Lorraine Sheridan is an internationally recognised forensic psychologist with more than 25 years of experience specialising in stalking, harassment, family violence and behavioural threat assessment.

Having completed Europe’s first PhD on stalking, Lorraine has spent much of her career improving how police, governments, courts and security professionals understand and respond to threatening behaviour.

A former Associate Professor at Curtin University in Australia, Lorraine is a Chartered Forensic Psychologist, registered in both the UK and Australia, and a former President of the Asia Pacific Association of Threat Assessment Professionals.

She has written five books and published more than 80 papers in peer-reviewed scientific journals. Her research has had a direct influence on policing and criminal justice. An evidence-based harassment risk assessment tool she developed was used by police forces across England and Wales for many years. She has also advised governments internationally on legislation relating to stalking, harassment and family violence.

Before moving to Australia, Lorraine spent more than a decade advising UK police forces on complex cases and was an accredited Behavioural Investigative Adviser (offender profiler). She continues to advise law enforcement agencies, businesses, security professionals and public figures around the world.

At Defuse Global, Lorraine personally assesses cases involving stalking, fixation, harassment, threatening communications and other concerning behaviour. She examines the evidence, considers the circumstances and behaviour of those involved, and assesses the nature and level of threat.

Her work continues beyond the initial assessment. Lorraine advises on how identified threats should be managed and helps clients put her recommendations into practice. She remains involved where necessary, reviewing new information, advising on interventions and helping clients and their representatives respond to changes in behaviour or circumstances.

Drawing on her research and extensive casework, Lorraine helps clients understand what the evidence tells them, where concerns are justified and what action is appropriate. Her advice is practical, proportionate and grounded in a detailed understanding of human behaviour.

Graham Hazel MVO

Graham Hazel MVO is a highly experienced protective security specialist and former Metropolitan Police Royalty Protection Officer, whose career has included responsibility for the personal safety and security of senior members of the British Royal Family.

During his service with Scotland Yard’s Royalty Protection team, Graham served as Personal Protection Officer to HRH The Princess Royal. His work demanded discretion, sound judgement and the ability to manage security around individuals whose public duties, private lives and personal freedoms required careful consideration.

Graham brings that experience to Defuse Global, advising prominent individuals, families and their representatives on personal protection and physical security.

His particular strength lies in helping clients understand whether close protection is necessary, what level of protection is appropriate and how it can be arranged without placing unnecessary restrictions on their daily lives.

As Defuse Global operates independently of close protection providers, Graham can offer impartial advice on selecting suitable personnel, assessing existing arrangements and ensuring that any protective measures are proportionate to the risks involved.

His approach is practical, discreet and informed by years of protecting people whose safety, privacy and freedom of movement must be carefully balanced.

Graham was appointed a Member of the Royal Victorian Order (MVO) in recognition of his service to Royalty Protection.