Meet The 2T Team

The following are the 2TSustainAbility Associate Consultants, the majority of which are based in Western Australia.

2TSustainAbility has access to a global network of professional consultants and specialists who can assist your business by delivering value add solutions and support.

To meet some of 2TSustainAbility's consultants in other regions CLICK HERE


Mark Stirling

Managing Director / Executive Consultant

A successful risk, health, safety and environment professional with Executive and Senior Management experience across multiple high risk industries and international work environments.


David Thick

Associate – Senior          Consultant

A successful safety, health and environment professional with Senior Management and Consulting experience across various industries, from mining, civil and construction, logistics and aviation as well as international consulting experience.

Alan Vasey

Alan Vasey

Associate – Senior Consultant

A highly qualified and experienced risk, safety, health and environment manager with domestic and international experience at senior and executive management level across a large range of industries including resources, manufacturing, exploration, processing, projects and renewables.


David Allen

Associate – Senior        Consultant

A successful professional Safety, Integrity and Risk Reliability manager and consultant with over 25 years’ Risk Management experience (Enterprise, Operational and Technical) across LNG, oil and gas, chemical, mining and utilities industries sectors across the UK, Australia, Middle East, Asia and Europe.

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Paul Brider

Associate - Senior Consultant

A highly experienced business systems professional, specialising in risk, safety and health, critical operational business processes, auditing and contractor management. A qualified mechanical engineer, NOSA auditor, project management and safety and health specialist with over 30 years experience across a wide range of industries types both domestic and international.

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Adrian Lehmann

Associate – Consultant               

A Training and Systems Process efficiency professional with experience in numerous service related industries, predominately hospitality, small business, mine site services, projects, training and assessment in WHS and Lean.


Rex Evans

Associate – Consultant               

A Training Consultant who can develop and deliver a wide range of safety training, including Health and Safety Reps and Asbestos awareness and who has a wide range of industry experience.

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Linda McAllister

Associate – Specialist Consultant

A health professional with extensive track record in providing work health solutions to a range of industries including; local and state government, mining, mineral processing, health care, social services, manufacturing and agriculture.