Studio

Two Form Structural Design colleagues discuss structural plans at a table in a sunlit office.

Established 2005

Form Engineers was established in 2005 by chartered engineer Andrew Ilsley with a vision to create a structural engineering consultancy that not only delivers technical expertise but also prioritises exceptional, service-driven solutions. Today, under the leadership of Andrew Ilsley and Ben Roberts, the practice continues to uphold this client-focused philosophy, ensuring that every collaboration is marked by dedication, open communication, and high-quality outcomes.

20+

Years in business

2000+

Projects completed across multiple sectors

80%

Of projects with repeat clients

Our Expertise

Form specialises in structurally challenging, architecturally stimulating new build and refurbishment projects, including period and listed buildings. Our diverse portfolio spans both public and private sectors, featuring private homes, residential developments (including private and social housing), student accommodation, commercial properties, educational buildings, retail spaces, hotels, leisure facilities, and interiors.

See our Services

Two Form Structural Design team members have a focused conversation at their desks in an open office.

Hands-on Approach

We distinguish ourselves through a hands-on approach with directors involved in every project and an experienced senior team. This ensures rapid response times, high-quality delivery, and a steadfast commitment to putting service first. Our approach has earned the practice a dependable reputation and established a loyal, repeat client base.

Two Form Structural Design team members discussing a 3D model.

Results through Collaboration

We believe that the success of any project starts with strong technical knowledge and extensive experience. However, achieving the best results goes beyond that - it requires true collaboration. Our role isn’t just to design structural elements, but to contribute our expertise to elevate the entire project.

Through open communication, enthusiasm, and a passion for creating outstanding buildings, we work closely with our clients and design teams from the start. It all begins with listening to our clients’ needs and understanding the architect’s vision. We take pride in being an integral part of the design process, it’s who we are.

Our People

A Form Structural Design team member in a hard hat and safety vest reviews plans inside a large timber structure under construction.

Sustainability as Standard

Sustainability is not an add-on, it’s integral to everything we do. From the start of each project, we focus on reducing embodied carbon and maximising environmental benefits through early collaboration with the design team and clients.

Our holistic approach balances environmental, economic, and regulatory factors, ensuring resilient, future-proof structures. By partnering with industry experts, academia, and research institutions, we stay ahead of the curve, delivering solutions that benefit both people and the planet.