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We understand the complexity and endless variables of domestic violence situations.

More importantly, we understand how to handle them appropriately.

Concentric Concepts has forged a reputation within the family violence sector with our agile and empathetic approach, combined with our unique, concentric layered methodology.


Our absolute priority is the safety and security of victim-survivors, and aiding in their recovery for the long term.

Domestic Violence 

>   Safety planning and implementation
>   Transport for victim survivors
>   Technical surveillance counter-measure sweeps
>   Device and computer analysis
>   Security audits and inspections
>   Security infrastructure upgrades

Who are we.

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Grant Killen - Managing Director.

Physical Security Expert

Grant began his career as a Royal Australian Navy Clearance Diver and participated in several overseas deployments before fulfilling contracts for the US State Department in Iraq.


In 2005, Grant joined the Queensland Police where he worked and instructed within a variety of specialist positions, including the Explosive Ordnance Response Team (EORT), and Close Personal Protection Teams who are responsible for the safety and security of political figures and visiting dignitaries.

Grant moved on from the Police, and consulted as a senior security and crisis management advisor in the mining, oil and gas industries. Grant was pivotal in developing comprehensive security and emergency management capabilities in challenging, high-risk environments.

After observing a lack of training and tangible safety and security solutions in the family and domestic violence sector, Grant formed Concentric Concepts, utilising his protective skillset and kind nature.

In the years since the inception of Concentric Concepts, Grant has forged an exceptional reputation within the family and domestic violence sector, known specifically for his professionalism, and empathy towards victim survivors.

Grant understands the needs of people in crisis. His team at Concentric Concepts have one goal; effectively protect clients and their families, so they can enjoy life, and live without fear.

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Matthew Foots - Operations Director.

Technical Surveillance expert.

Matthew has an extremely diverse skillset, with experience across several industries, including banking and mining.

In 2002, Matthew joined the Queensland Police Service (QPS) completing his general duties tenure in Brisbane West and Fortitude Valley divisions. Matthew transitioned to the   Driver Training Unit where he became an advanced driving instructor to a number of specialised units including Surveillance, Special Emergency Response Team (SERT), Public Safety Response Team (PSRT), the Dog Squad and Traffic branches.


Most recently, Matthew was a member of the Technical Surveillance Unit at Queensland’s Crime and Corruption Commission, before transferring to the Technical Surveillance Unit within the QPS.


As a highly skilled surveillance technician, Matthew was instrumental in gathering intelligence and evidence for a number of high-profile investigations, and completed several training courses and conferences locally, interstate and overseas in video, audio, locks, alarms and CCTV.


Matthew was also an operational skills and tactics instructor (OST) in the QPS, teaching numerous sections in firearms, taser and operational up-skilling. He brings to Concentric Concepts a strong operational policing background, exceptional technical capability and advanced driving and training skills.

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List of Services

Executive Protection

Close personal protection for executives, celebrities, and high-net-worth individuals and their families.

Corporate Security

Security solutions for corporates and organisations, including safeguarding programs and vulnerability assessments.

Travel & Chaperone

High-level safety and security for your staff or loved ones travelling alone, from local to International.

Security Risk Management

Identification of, and solutions for security risks, vulnerabilities, threats and risks within organisations.

TSCM - Bug Sweeps

Technical Surveillance Countermeasure services for organisations and individuals.

CCTV Installations

Design, installation and management of CCTV systems for commercial and residential locations.

Crisis Management

Domestic or International deployment to manage complex situations, such as a kidnapping or act of terrorism.

Customised Services

Tailored services for individuals or organisations, from mining and construction to retail and entertainment.

Guardio Secured

Neighbourhood security subscription service that patrols the area of subscribers every night of the week.

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