Chemical & Processing

Chemical and industrial processing plays a vital role in the production of materials, fuels and goods that underpin modern society. This includes chemical manufacturers, thermal processing industries and a wide range of other industrial goods producers.


Today, these industries face significant challenges, from economic headwinds driven by energy, labour and material prices, to the ongoing management of ageing assets and the pressing need to decarbonise. Otto Simon works alongside our clients to overcome these challenges, delivering safe, efficient and pragmatic engineering solutions for both plant improvement and new build projects.

Our team brings deep sector knowledge in the design and operation of industrial processes, enabling us to support projects across the full lifecycle. We deliver plant modifications that improve efficiency, productivity and safety, while also providing concept design through to full project execution including construction and commissioning of new facilities. Our process led multi-disciplinary engineering team ensure our clients receive robust and practical solutions that are tailored to their operational and regulatory environment.

In our 20-year history we have successfully completed thousands of projects ranging from targeted upgrades of existing assets through to the design and delivery of large-scale new build facilities. Our track record demonstrates not only the technical capability to execute complex projects, but also the reliability and consistency that clients demand when selecting an engineering partner.

We believe in building strong and lasting relationships with our clients. Much of our work is repeat business from trusted partners who value our collaborative and flexible approach. By tailoring our services to meet each client’s specific needs, and by upholding our values of respect, integrity, responsibility, camaraderie and pragmatism, we support our clients in delivering technically and commercially successful projects.

As an Employee-Owned Trust, every OSL team member is personally invested in the success of our clients, creating a shared commitment to delivering the highest standards of service and long-term value.

Meet Our Head of Sector

Aaron Cross

Aaron is a chartered process engineer with extensive experience. As Head of Chemicals Aaron brings a wealth of knowledge and direction to Otto Simon.



For years Aaron has been lead process engineer for plant improvements and new build developments in the chemical processing industry. Aaron has gained experience with the implementation of safety improvement projects, optioneering studies, Pre-FEED and FEED studies, detailed design, and commissioning. 

Improvement & Upgrade Projects for Operating Facilities

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Reactor Replacement, FEL-2

Kellogs, Novellis

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Healthcare Products Batch Processing Plant

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