Defuse / Diːˈfjuːz/ Verb:
To Make a Situation Less Tense Or Dangerous

Defuse Global is small on purpose.

We focus on senior judgement, not scale, because experienced people, not large teams, best handle complex personal risk.

We work with advisers, family offices, organisations, and prominent individuals when behaviour is causing concern, but the level of risk is not yet clear. Our role is to bring clarity early, before fear, speculation, or overreaction takes hold.

We don’t sell fear. We don’t default to heavy security.

We look carefully at what’s actually happening and advise proportionate, evidence-led action — or reassurance where it’s justified.

Philip Grindell MSc CSyP – CEO & Founder

Philip founded Defuse Global after a 30-year career in the Metropolitan Police, much of it spent dealing with serious, complex, and high-consequence threats.

In 2016, following the murder of Jo Cox MP, he was the Detective Inspector tasked with building Parliament’s behavioural threat assessment capability from the ground up. A year later, his team identified and stopped a planned terrorist attack against a serving MP.

His work included counter-terrorism, protective intelligence, and responsibility for the security of members of the Royal Family and government ministers. Over time, Philip learned that most threats do not arrive fully formed — they emerge through behaviour, warning signs, and patterns that are often missed or misunderstood.

Defuse Global was created to bring that level of judgment to advisers and clients outside government. Philip’s work today focuses on helping people think clearly when fear affects sleep, health, and decision-making, and on addressing problems early, before they damage lives and reputations.

He is the author of Personal Threat Management: The Practitioner’s Guide to Keeping Clients Safer, widely used across the industry, and one of fewer than 400 globally recognised Chartered Security Professionals.

Philip delivers keynote talks and seminars at events, tailored to each audience and focused on clear, practical takeaways.

For speaking enquiries, contact HOLO Global Agency at [email protected]

Order the best-selling book here:

Amanda Grindell – Director of Business Development

Before joining Defuse Global, Amanda worked in counter-espionage and technical surveillance countermeasures — environments where discretion is not a preference but a necessity.

That background shapes how she supports Philip and the clients Defuse Global works with. People often come to Defuse at moments of unease, sharing concerns they have not voiced elsewhere. Amanda understands that trust is built quietly, through care, accuracy, and doing exactly what one says they will do.

She manages operations, develops proposals, and builds long-term client relationships, ensuring work runs smoothly behind the scenes.

Her international experience enables her to work comfortably across cultures and time zones, and her calm demeanour helps people feel at ease, even when conversations are challenging.

Clients know that when they speak to Amanda, they are being listened to — and that what they share stays with her.

Dr Lorraine Sheridan, PhD

Chartered Forensic Psychologist

Lorraine works at the point where behaviour starts to worry people, but the level of risk is not yet clear. Her role is to help advisers, organisations, and individuals understand whether their concern is justified, what genuinely matters, and what, if anything, needs to happen next.

She completed Europe’s first PhD on stalking and has spent more than 25 years working on cases involving stalking, harassment, threatening behaviour, and harmful communications. Much of her work sits in situations where there is uncertainty, conflicting advice, or rising anxiety, where proportionate judgement matters more than labels.

Lorraine has advised police forces, courts, governments, corporations, and security professionals internationally. An evidence-based harassment risk assessment she developed was used nationally by police in England and Wales for many years, shaping how large numbers of cases were assessed and managed.

Registered as a forensic psychologist in both the UK and Australia, Lorraine is known for her calm, evidence-led approach. She helps separate genuine risk from background noise, avoids unnecessary escalation, and supports decisions that people can stand behind.

Her work reflects Defuse Global’s values: clarity over alarm, judgement over assumption, and action only where it is genuinely needed.