About Oak Tree: ISO & QHSE Consultancy in Aberdeen

About Oak Tree

Founded in 2014, Oak Tree Consultancy provides specialist ISO and QHSE (Quality, Health, Safety & Environmental) support to businesses across Aberdeen, the UK, and beyond. Our clients range from small enterprises to large, multi-site organisations in industries including oil & gas, lifting operations, aviation, weather monitoring and environmental consultancy.

We specialise in the design, integration, and ongoing support of management systems certified to ISO 9001, ISO 14001, and ISO 45001. Our goal is simple: to help organisations improve efficiency, stay compliant, and build a culture of continuous improvement.

As an independent consultancy vetted and approved by TÜV SÜD, our services are listed on their recognised consultants network. We’ve built lasting client relationships based on trust, flexibility, and proven results — and we’re proud that many of our earliest clients still choose to work with us today.

Why Choose Us?

We combine practical expertise with a flexible, no-fuss approach. Whether you’re looking to improve efficiency, demonstrate compliance, or gain a competitive edge, we make certification straightforward and stress-free.

Our Approach

Simple. Practical. Stress-Free.

We design ISO management systems that are easy to use, flexible around your schedule, and built for real-world results; delivered on-site or remotely to suit your needs.

Our Commitment

Adding Value, Not Complexity.

We tailor our services to your business goals, taking on as much or as little as needed. The result is cost-effective, efficient consultancy that keeps you compliant and moving forward.

Our Team

Qualified. Experienced. Evolving.

Our consultants bring years of hands-on industry experience and maintain active membership with CQI, CIPS, IOSH, and IRCA; ensuring you benefit from the latest expertise at every step.

Affiliations

Tuv Sud
CQI IRCA Logo
Cips 1
Agcc
Iosh