We are a practice of consulting engineers, based in Cambridgeshire. We have over 25 years experience delivering engineering solutions to the construction and property industry.

We operate locally, nationally and internationally, and we aim to provide prompt personal competitive professional service on all our projects. In particular, our knowledge of the local market, architects, developers and contractors enables us to provide efficient and cost-effective designs and advice to our clients.

Please browse the selection of our work on this site, and if you think we might be able to help you, we look forward to hearing from you.


  • Leslie Gawn BSc CEng MICE MIStructE MIQA

    Les is a Chartered Civil and Structural Engineer, with many years experience in consultancy, specializing in building structures. He has been responsible for carrying out structural design on a wide range of building forms and construction materials. He has extensive experience in both traditionally procured construction as well as being a member of design and build teams, in new build and refurbishment developments.

    Les also has detailed knowledge developed over many years in the local area, of housing construction types and potential structural deficiencies which manifest themselves. He brings this expertise to the many structural inspection reports we produce each year for householders and potential purchasers.

    Les established the practice in 1988 to bring modern structural skills to the Cambridge area in a professional cost-effective environment.

  • Roger Smith IEng AMIStructE
    Associate Director

    Roger trained and continued his career with local consultants before joining Leslie in 1997. He has extensive experience of work in the retail and health sectors, as well as working for commercial and domestic clients.

    Roger has been part of a team of consultants involved in the development of a large number of high street department stores in the UK. He has also been involved in the development of a number of Nursing Homes and Doctors surgeries in the Midlands and the East Anglian area, working in conjunction with a leading Building Contractor, and most recently has acted as design engineer on a £15m development for Nottingham Hospital.

  • Robin Svensson IEng AMIStructE MICE
    Associate Director

    Robin joined the practice in early 2002 and worked for large and medium sized multidiscipline consultancy practices before joining Gawn Associates. He has experience in varied projects using all traditional building materials, steel, concrete, masonry and timber, in all sectors of the building industry, e.g. educational, retail, commercial, housing, and arts and leisure. These together with experience of redevelopment schemes bring the team a wide variety of general practice skills on building projects.

    Robin prides himself in having worked on the design of the Air Traffic Control Tower at Stansted Airport.

  • Richard Moss BSc CEng MIStructE
    Senior Design Engineer

    Richard is now semi retired, he has over 35 years experience spent with two major national consultants in Britain and a few years working overseas on military and other structures. He joined us in 2007. Richard mentors our graduate engineers and helps them obtain chartered status.

  • Marcus Garner MEng (Hons)
    Senior Design Engineer

    Marcus has worked for the Company since 2006 following completion of his Master’s degree at the University of Manchester Institute of Science and Technology (UMIST).

    Marcus is engaged on a variety of projects from house extensions and conversions to larger residential and commercial developments. He is also working towards gaining Chartered status with the IStrutE and is responsible for organizing CPD events for the Company.

  • David McCarthy MEng(Hons) PhD CEng MIStructE
    Chartered Structural Engineer
  • Daniel Aitken BEng (Hons) MIStructE CEng
    Chartered Structural Engineer
  • Mike Newell MEng (Hons)
    Structural Design Engineer

    Mike joined the company in Autumn 2018 following the completion of his Master’s degree in Civil and Structural Engineering at the university of Leeds. Mike is engaged on a variety of projects from residential projects to larger commercial and industrial developments. Mike is working towards gaining his chartered status with the IstructE.

  • Hayden Lockhead MEng (Hons)
    Graduate Engineer

    Hayden joined the company in June 2021 following the completion of his Master’s degree in Civil and Structural Engineering at the university of Leeds. Hayden is engaged in a variety domestic and commercal projects.

  • Dave Smith
    Senior CAD Draftsperson

    Dave has had over 50 years experience in all areas of construction, from complex reinforcement drawings to the various highway and health sectors

  • Josh Timms
    CAD Technician

    Josh has worked on a variety of projects and using different materials, he works closely with Architects and contractors.

  • Mattius Matthews
    CAD Technician

    Matt is studying part-time, for a BSc in Civil Engineering. He has worked on Reinforced Concrete frame structures over twenty storeys, steel frame builds, external works, retaining wall structures and traditional smaller domestic projects

  • Callum Tryrer
    CAD Technician

    Callum is studying Civil Engineering part time at a local college while he develops his CAD and construction knowledge by working on a variety of projects.

  • Gill Hayden-Smith

    Gill acts as PA and administrator to the director, she also manages the general working of the office.

  • Louise Freebody
    Finance Administrator

    Louise has been with us since 2010 and manages the finances of the company.  She is responsible for preparing invoices for the engineers, and monitoring the financial side of the business.

  • Sarah Sykes
    Filing Clerk