Subteno was founded in 2017 by Matthew Byatt and Andrew Dye  in order to provide clients with Civil and Structural Engineering expertise

of the highest level, whilst focusing on developing and maintaining long term mutually valued relationships.  Our success, both past and future, rely upon clear communication alongside the delivery of a first-class service.  


Subteno’s professional engineering advice is always fully considered, inherently safe, carbon efficient and economically derived.  Subteno strive to minimise wasteful use of the earth’s resources in our structural and civil engineering design, both in quantum and in detail. 


Subteno embrace all forms of diversity amongst our workforce and require our staff to be considerate of others.


We provide simple, commercially focussed, engineered solutions to complex problems. 


Subteno have invested significantly in the very latest engineering software and computer hardware to assist in delivering projects in a

high quality, clear and well presented format. 

Why choose Subteno?

We listen to and understand our clients.
Right first-time approach, delivered on time.
Technical excellence in our service.
Clear interpersonal communications.
Integrity in our delivery and business activity.

Our expertise

Eur Ing Matthew Byatt C Eng FIStructE 

Energetic and highly motivated Chartered Structural Engineer with extensive experience across both the UK Construction Industry and the Offshore Energy sector within the UK and NL. 

Director of Subteno Ltd, based in Poringland. Responsibilities cover both the technical and commercial running of a wide variety of projects and work-scopes across many sectors for our varied and highly valued client base. Previous experience working within both consulting engineering practices and as a steelwork contractor gives a broad, well-rounded and practical knowledge base of structural engineering within the wider context of the construction industry.

Specialities include structural steelwork design across numerous sectors from large distribution and logistics warehousing through to small commercial buildings, schools and retail.  Extensive experience with offshore engineering particularly in the Brown Field arena.

Vice President of Institution of Structural Engineers, member of IStructE Council, as well as serving on numerous panels and committees. Previously chaired the technical panel drafting the 'The Structural Use of Glass in Buildings 2nd Edition'. Active regional group committee member of IStructE since 1995 and twice Regional Group Chairman.

Andrew Dye

Highly experienced and professional engineering consultant with many years of experience within pre-planning, due diligence and infrastructure design, as well as delivering commercial and retail projects within frameworks and on an one off basis.

Director of Subteno Ltd, based in Poringland. Responsibilities cover both the technical and commercial running of a wide variety of projects.  

Over thirty years experience within the construction industry all within engineering consultancies.  Specialising in retail, residential and commercial sectors as well as managing projects from feasibility studies, pre planning right through construction.  Has been involved in significant projects for large retail developers, both in developing concept designs and delivering fast-track, complex projects.  Andrew has an keen interest in industry driven technology and the efficiencies it can bring to construction.