About us

Providing a comprehensive design service for all types of building structure, Tweddell & Slater was established in 1989 by founding partners Nicholas Tweddell and Edward Slater. Nick and Ted continued working together as a partnership until 2000, building a solid foundation through well-established professional relationships across a wide variety of sectors.

Since then, the company has grown to a multi-disciplinary practice, spanning a broad scope of work ranging from domestic alterations to prestigious, multimillion-pound developments.

Our staff are Chartered with the Institution of Structural Engineers and/or the Institute of Civil Engineers. Some are working towards this, and we foster a positive environment of Continuing Professional Development.

  • Reuben Gibson

    MANAGING DIRECTOR

    Reuben has a wide range of design experience with many structural materials including concrete, carbon and stainless steel, timber and its composites, aluminium, glass and bronze.

    His expertise is based on a wide variety of buildings and structures which span both traditional and modern timber framed structures, retaining walls, bridges, steel portal frames, sculptures and reinforced concrete frames.

  • Stuart Mair

    CIVIL & STRUCTURAL ENGINEER

    Stuart has specific responsibilities for management and implementation of infrastructure and civil engineering aspects of the practice work.

    He has extensive experience of flood risk assessments and protection schemes, channel modelling, feasibility studies, drainage design, SUDS, access roads, adoptable highway and drainage applications.

  • Cathy Taylor

    STRUCTURAL ENGINEER

    As part of the structures team Cathy is involved in a variety of residential, commercial, industrial and agricultural projects, with particular interests in historic buildings and sustainable, low carbon construction. She has experience of designing steelwork, timber frame structures, green oak frames, reinforced concrete, retaining walls, glazing and foundations, along with extensive experience carrying out structural surveys, particularly heritage buildings and agricultural buildings for conversion.

  • Richard Lote

    GEOTECHNICAL ENGINEER

    Richard undertakes site investigations and other specialist geotechnical and environmental work for civil and structural engineers, architects, developers, contractors and loss adjusters.

    Richard’s work covers the full scope of ground investigation, site inspection, testing and analysis as well as foundation design.

    He is a Chartered Geologist with the Geological Society.

  • Trevor Walton

    STRUCTURAL ENGINEER

    Trevor is an experienced structural engineer with a broad range of expertise across educational, industrial, retail and residential projects.

    He has undertaken a wide range of projects in the local area and specialises in barn conversions.

  • Ellis Short

    STRUCTURAL ENGINEER

    Ellis has recently joined Tweddell & Slater. As a Senior Structural Engineer, he is responsible for a wide range of Structural and Civil projects.

    Ellis works with AutoCAD and other design packages.

  • Andy Johnston

    ENGINEER

    Andy is an Incorporated Engineer with experience in both Civil and Structural Engineering. His work includes drainage strategies, CAD design and foundation design.

  • Roscoe

    CMO: Canine Morale Officer

    Roscoe is has a wealth of office experience, working mainly on the top floor in a horizontal position, but also adept at circling around on the spot where necessary. Likes walking around the nearby balancing pond and having back scratches during weekly meetings.

  • Bobby Tweddle

    TECHNICIAN

    Bobby is our resident Revit magician. He works closely with the structural engineers to produce technical drawings and 3D models using BIM software.

  • Rosie Brewer

    TECHNICIAN

    Rosie is a Technician with a background in AutoCAD. She is a Technician Member of the Institution of Civil Engineers and her experience enables her to work with both the Civil and Structural team.

  • Ted

    Canine Fluff Creator

    Despite several attempts to bring Ted into the pleasant, welcoming and friendly office environment, he has never shown any interest, preferring to work from home. Mostly in the horizontal position. Likes food.

  • Steven Henderson

    Steven has recently joined Tweddell & Slater as a drawing technician. He comes with over 30 years experience working in an Architects Practice on numerous commercial and domestic schemes including new build, conversion and refurbishment.

    He is a full member of the Chartered Institute of Architectural Technologists (MCIAT).

  • Przemek Kornacki

    Przemek has over 15 years’ experience as a structural engineer. Throughout his career he has sought innovative solutions to structural design, which lead him to employ BIM software for steel detailing and connections.

  • Jane Gibson

    FINANCE & OFFICE MANAGER

    Jane takes care of the financial and administrative aspects of the business and is responsible for the smooth running of the office.

  • Rhiannon George

    ADMINISTRATION & RESOURCING MANAGER

    Rhiannon is involved with a range of administrative and resource management tasks. Her technical work is focussed on nutrient neutrality for residential developments.

If you would like to talk to us about your project, please get in touch.