team

David Dempster

MEng CEng MIStructE
Director

David Dempster

David is a chartered structural engineer with a proven history of delivering technically challenging, award-winning projects across a wide range of sectors and building types, from the refurbishment and extension of historic buildings to the development of innovative volumetric and mass timber solutions.

David applies a strong theoretical and practical understanding to challenge established methods and assumptions, leading the development of sustainable design practices across the company.

He is passionate about driving sustainable solutions by understanding client and user needs and motivated by the opportunities for learning and improvement in everything we do, especially now during our collective push towards Net Zero.

Away from his desk he likes to keep active by playing football and getting out of London to walk or cycle, as well as enjoying the odd game of darts or pub quiz.

Federica Largaiolli

MEng Ing ARB CEng AIStructE
Associate

Federica Largaiolli

As well as being an engineer, Federica is proficient at Revit and has a key role at Graphic Structures in coordinating our technical output, continually progressing, and optimising our BIM capabilities.

She has always had a keen interest in sustainable building techniques, starting with a focus on timber design when she worked in Italy, and now as designer on Passivhaus developments in London. She is a Passivhaus Certified Designer.

She has had the joy of seeing several of her projects through from conception to completion whilst at Graphic Structures including new build houses, intricate extensions as well as residential led, multi-use Passivhaus schemes.

Being from the Dolomites, she loves the outdoors including hiking and snowboarding and, of course, cooking (and eating) Italian foods.

Ben Petty

MEng
Structural Engineer

Ben Petty

Ben spent his university summers on highways construction sites, followed by a Graduate Engineering role at AECOM, where he worked on the Thames Tideway project.

He is a diligent engineer and, since joining Graphic Structures, he has been integral to the delivery of our Passivhaus residential led, mixed use schemes which have been in construction.

When he’s not at work he likes to be out walking, running, cycling, swimming, or climbing!

Susana Bhandari

MEng
Civil Engineer

Susana Bhandari

After graduating in Civil Engineering at the University of Nottingham, Susana started her career as a Graduate Site Engineer working on the Luton Airport Parkway DART project and then the A13 road widening for main contractor Kier.

Moving into consulting, Susana joined Graphic Structures and has developed her technical expertise in Civil Engineering design. She works across multiple sectors and projects providing sustainable urban drainage systems, flood risk assessments and S278 works, amongst other services.

She feels engineering is such a rewarding career as she helps make a positive difference to people’s lives.

Outside work, she is currently learning to play the piano, but also enjoys running and spending time with her family.

Mark Mawby

BEng CEng MIStructE
Director

Mark Mawby

Mark is a Founding Director of Graphic Structures and Chartered Structural Engineer with over 25 years of experience in the UK and overseas. Having worked at all levels, he is grounded in sound engineering principles and has a keen eye for detail.

Mark offers innovative and creative, yet practical designs and adds positive contributions to our built environment. He is committed to supporting clients and architects to achieve their design vision, and improve the way that buildings are engineered and built for the future.

Mark is a big foodie; he loves to eat out in London and is always trying new restaurants. He also enjoys Sci-Fi and keeps up on the latest film releases but has old-school favourites (Star Wars comes to mind)!

Annie Stagg

MEng
Structural Engineer

Annie Stagg

Annie joined Graphic Structures after building her experience at AKT-II where she worked on landmark skyscrapers and historic regeneration. She brings a multi-disciplinary knowledge and enthusiasm to all our projects.

An integral part of the Team, Annie leads our Social Group, making sure we are well fed, watered, and enjoying each other’s company as well as working together.

Outside work she has a range of hobbies from crochet and embroidery to rock climbing and hiking. She is currently developing her skills creating digital art, some of which gets used for Graphic Structures marketing material.

Archie Shirley-Beavan

MEng
Associate

Archie Shirley-Beavan

Archie is responsible for Civil Engineering design across the practice, working in close collaboration with our structural engineers to deliver well-coordinated projects.

He is experienced in infrastructure design for urban and country developments including sustainable urban drainage systems, flood risk assessments, drainage, highways, and levels design.

With strong stakeholder engagement skills and experience, he has successfully worked on developments with Network Rail, the Environment Agency, and many Local Authorities, as well as sewer providers.

In his spare time, he loves to watch sport (many types). At least once a year he goes on a kayaking trip with his mates and gets back up to the lovely Scottish countryside to visit family and their dog.

Eleanor Ball

MEng CEng MICE MIStructE
Director

Eleanor Ball

Eleanor is a Founding Director of Graphic Structures. Chartered as both a structural and civil engineer, she supports both disciplines across our projects. She has a holistic view across the practice portfolio, supporting both our colleagues and our clients.

Eleanor has developed a large network within the industry through networking, industry events and volunteering, including roles as a STEM volunteer and with Women in Social Housing, as well as speaking at conferences and moderating panels.

Eleanor believes that collaboration and communication are the key to successful projects and relationships.

Outside work, Eleanor loves to be outside. Her favourite activities are sailing, cycling, hiking and SUPing, however, she doesn’t always escape the City and loves London for its food scene, buzz and buildings.

Gary Thorne


CAD Manager

Gary Thorne

Gary is the CAD Manager at Graphic Structures and has over 20 years draughting experience. As well as producing drawings and models he is also responsible for implementing and optimising the BIM and drawing standards across the practice.

He is experienced in many sectors and has contributed to award winning projects such as RIBA House of the year, Caring Wood and, The Sultan Nazrin Shah Centre Oxford.

Gary enjoys being part of such a close-knit team dynamic at Graphic Structures and the support we give each other throughout our daily activities.

When he’s not at work, he is a keen golfer and an avid NFL fan.

Cian Garry

MEng
Structural Engineer

Cian Garry

Cian graduated from the MEng Architecture course at the University of Leeds, where he refined his interest in using environmentally-conscious materials and design principles.

Outside of work, Cian has a passion for electronic music, DJing and running club nights in London, Leeds and afar. When he opts to relax, he usually spends his time watching sport, in particular American Football and Football.