Tim Griffiths


Bringing over 30 years Supply Chain, Business Improvement and Capital Project experience, Tim has been director of Cl for 12 years and successfully established two (2) other consulting firms during that time. Six Sigma Black Belt trained, Tim provides a no-nonsense approach to improvement, coupled with global Supply Chain and Project experience, Tim heads up the Cl team and organisation

John Edwards

Senior Advisor

A successful recruitment and labour hire professional John has a long history of Supply Chain activities across Australia and globally. In recent years John ran the successful ProcureNet Labour Hire and Recruitment company in Queensland and has sound knowledge of the labour industry. John leads Cl’s People element and coupled with an extensive database of resources, can help support your organisation in building the right team.

Chris Bevin

Senior Consultant

A Certified Practicing Project Manager (CPPM) with extensive Project Management and Project Controls experience. Chris heads up Cl’s Project Management element and brings data driven discipline to Cl’s projects and improvement elements.

Tom Whiting

Senior Consultant

A certified Project Management Professional (PMP), Tom heads up Cl’s Process element, with a Project Management focus. Experience in offshore and onshore projects globally, Tom’s ability to pull apart processes, re-map and re-align to stakeholder requirements is unique to Cl’s skill set.

Mark Smith

Senior Consultant

Mark is a professional supply chain expert with Australian and global experience. Mark has specific skills in mining services and large maintenance contracts with extensive site experience and a hands on approach.

Michael Duncan

Senior Consultant

Michael is dedicated to understanding business processes and solving problems for clients. Michael has a keen understanding of the importance of clear communication in any organisation, and has been a mentor to university students. With 30 years’ experience in different business sectors, Michael specialises in business process improvement, supply chain, project management and commercial management. Previously a swimmer at national level and professional coach, Michael now loves nothing more than being in the ocean. Michael is a member of the Chartered Institute of Procurement and Supply.

Ruth Pedrina

Senior Consultant

Ruth is a strategic leadership professional with 20 years of experience across a range of industries. A strategic thinker who thrives on challenges, Ruth loves the variety of work at Critical Input, and helping clients solve problems in a way that has lasting impact. A recent highlight was as a negotiation lead on a $650 million shipping services project where Ruth delivered $10 million savings per annum over a 10-year period while optimising supply chain efficiencies. Another was as a Project lead on a $25 million rail services project, where Ruth not only delivered $2.5 million savings per annum over 10 years, but also improved operational and safety outcomes. Ruth has a Bachelor of Business and an MBA, and specialises in strategic leadership, commercial, procurement, supply chain, negotiation, and change and transformation.

Steph Cush

Project Officer

Steph joined Critical Input in 2017, bringing her warmth, adaptability and willingness to roll her sleeves up and get the job done. Originally from country New South Wales, Steph loves adventure and isn’t afraid of change. She moved to Canberra to complete her communications degree, after which she set off for a stint in London. Upon returning, Steph followed some friends to Brisbane where she fell into project support work and has thrived in the field ever since. Steph loves working on projects due to the variety they bring, and the fact she’s always learning something new. Steph is a great team player who brings a practical approach to her work and thoroughly enjoys developing new connections on each project she works on.