Graham Trewhella



Our clients tell us our people are our greatest strength.

Richard Roberts


Regardless of scale, every project is partner-led. The people you meet at the commissioning stage are the ones who will drive your project to completion.

Peter Hamilton


“Cass Associates has a highly professional team who apply a valuable holistic approach to challenges…”

Our people are highly experienced, award-winning experts in their field and are passionate about what they do.

Kate da Cruz


75% of our team has been with us for 5 years or longer, enabling us to offer clients a seamless service based on stability and longevity.