Allan Corfield Structures (ACS) was initially established in early 2021 to provide structural engineering services to Allan Corfield Architects (ACA) clients. Led by our Technical Director, Chartered Structural Engineer and SER Certifier David Gallagher, ACS now offers a market-leading service for both ACA & external clients, including a number of top Architects & MMC kit suppliers.

Since its inception, ACS has secured over 70 projects, and the team has grown to 9. We provide value from the early design stages by working closely with our clients and designers rather than as a traditional reactive engineering service. Our vast experience in Timber Frame, SIPS, and ICF means that ACS are the right choice for your project.


David Gallagher
Technical Director & Structural Engineer


David attained an MEng in Civil Engineering Design and Management at Dundee University in 2006. During his career, he has obtained a wealth of experience working in the UK, Middle East and New Zealand working on a number of high profile projects before joining AC Structures as Technical Director.

After returning to the UK in 2012, David returned to the design office including 5 years working for Harley Haddow where he took the structural design lead on a wide range of projects from house extensions to exemplar Passivhaus research centres and hotel conversions of A-listed buildings. 

David joins the ACA team as Technical Director of ACS with the focus of complementing the existing high level architectural services provided with an aligned and coordinated structural support to provide Clients with an holistic design approach. Since joining ACS he has overseen the growth of the team to 6 and has become a SER Certifier.

David has recently undertaken his own self-build house extension where he lives with his wife Rachel and two boys Seamus and Douglas. David enjoys travelling, running and football. 

Susan Anderson 
Senior Structural Engineer


Susan obtained a BEng in Civil Engineering from Edinburgh University, then embarked upon a career taking in everything from tunnelling and harbour design, to schools and warehouses, before specialising in residential work, both in new build and alterations.

She has extensive experience in timber, steel, masonry and reinforced concrete design and particularly enjoys site work and problem-solving site issues.

Susan joined ACS from Woolgar Hunter, where she was the main point of contact for house builder clients, along with working on refurbishment and conversion projects.

Away from the office, Susan is a keen quizzer and thinks her partner should let her get a cat.

Michael Cairnie
Project Structural Engineer


Michael graduated from Heriot-Watt University in 2017 with an MEng in Structural Engineering with Architectural Design and recently joined AC Structures as a Project Structural Engineer.

He has spent the last five years developing as an engineer at a consultancy in Edinburgh, working in various sectors. He brings experience in leading a wide range of projects, from house alterations to commercial showrooms across the country and using a diverse range of structural materials.

He is currently working towards gaining Chartered Engineer status with the IStructE. Michael has joined the AC Structures team to get involved in the exciting projects we are working on and to provide future clients with innovative and sustainable design solutions.

Away from work, Michael spends his time getting involved in sports such as football, golf and snowboarding. He enjoys long walks with his dog Milo and travelling.

Paul Chambers
Structural Design Engineer


Paul graduated from Edinburgh Napier University with his MEng in Civil Engineering in 2022. Focusing the final two years of his studies on the sustainability of recycled timber, he was able to have a paper published regarding the analysis of recycled timber within CLT. After finishing university, he was keen to find a hands-on role in structural engineering.

After a short time spent travelling in Southeast Asia, Paul joined the team at ACS in the second half of 2022, where he began the next stage of his engineering journey. Working towards a chartership with the IStructE under the guidance of his senior engineers, he is keen to continue learning as he works on innovative construction projects at ACS.

In his spare time, Paul likes to go hiking, rock climbing and snowboarding, amongst other outdoor sports. He often spends his holidays backpacking or walking long-distance hiking trails.

Louis Maurice
Graduate Structural Engineer


Louis graduated from the University of Edinburgh in 2022 with an MEng in Structural Engineering with Architecture, where he completed his thesis research project on the reuse of structural components in modular housing as a means of embodied carbon reduction.

Louis now joins ACS in a Graduate role to build on his university and previous industry experience, working towards IStructE chartership following the guidance of his senior engineers. He looks forward to working on a range of projects and developing innovative engineering solutions.

In his spare time, Louis continues to represent Edinburgh University AFC in the Scottish Lowland Football League as one of the team’s alumni players. He enjoys making the most of his dual French nationality, spending time with his family in the Basque country.

Allan Corfield
CEO & Chartered Architect


Allan Corfield has been an RIBA Chartered Architect since 2006 and set up one of the top custom and self-build architectural practices AC Architects, in 2009. He has overseen over
500 self-build projects and leads a team of 24 designers.

He is an expert in eco-home design and regularly speaks at conferences across the UK, speaking and writing for Homebuilding & Renovating Magazine.

Allan’s initial vision was to create a design lead Structural Engineer business in 2020. He
assists David Gallagher in the delivery of the strategic plan.

Allan married his partner Emma in 2014, and their first child – Flynn, was born in 2015, with little Ruairi completing the family in 2019.

Emma Corfield
Learning & Development Director


I am Emma Corfield, and I am married to Allan, the owner and fellow director of ACS. We have been together for 12 years, and during that time, I have been on the journey to support and help build our business. For the last 16 years, I have worked as a teacher. I am passionate about education and working with both children and adults. That led to coming into working full time for ACS and leaving my teaching post.


I am now the director of Learning and Development within ACS. My role consists of developing Continuous Professional Development within the company and supporting staff on this journey. This will involve creating and delivering a new CPD programme.


In my free time, I enjoy spending time with my two boys, which usually involves football and karate! I also enjoy being outdoors, especially on the beach, and when I get some time to myself, I love going shopping or socialising with friends.

Rod McMillan
Non-Exec Director


Rod joined the team in 2018 as Non-Executive Director to help in ACA’s strategic business development and became an important part of shaping ACS. Rod is experienced in helping business owners and leaders with strategy, people, organisation structure, finance and commercial problem resolution.

Along with 3 co-directors he performed a Management Buy-Out of an Electronic Office Supplies company, ISA International plc. ISA’s flotation on the full list of the London Stock Exchange followed 2 years later.

For the last 25 years Rod has worked as an independent Non-Executive Director of businesses across many different sectors, from international electronics manufacturing to food production to healthcare.

Kim McIntosh
Office Manager



Kim joined ACA as the Office Manager in 2013, and has taken the successful processes and procedures developed in that time, over to ACS.

Kim assists both David Gallgher and Allan Corfield in the day to day running of ACS, taking control of finance, HR and office policies.

In her spare time, Kim is interested in genealogy, dressmaking and embroidery.

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