A forward-thinking firm with a legacy in low-carbon building design, DSSR has contributed to a number of sustainability firsts throughout its 75 years—including a number of landmark renewable energy projects.

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DSSR is an independent, award–winning practice of Consulting Engineers which operates across the UK, specialising in the design of sustainable Mechanical, Electrical, and Public Health (MEP) services for the built environment.

Energy efficiency has always been a vital consideration within every design created by DSSR. Over the past 75 years, we have demonstrated that we are specialists in designing energy-efficient buildings across a wide range of professional sectors, utilising innovative MEP designs, and applying the latest design technologies.


Case Study: Scania Decarbonised Buildings

DSSR is proud to have worked with Scania UK to deliver the sustainable design of a market-leading facility, which is “among the most sustainable sheds in Scotland.”


Our services include:

  • Low Carbon Energy Assessor LCEA
  • BREEAM Assessors
  • BREEAM Advisory Professionals
  • CIBSE Heat Network Consultants
  • Thermal Modelling & Building Performance Simulation
  • Computational Thermal Dynamics Analyses (CFD)
  • SBEM Section 6 and Part L Compliance Checks
  • Decarbonisation Studies
  • Energy Performance Certification
  • Energy and Thermal Comfort Analyses
  • Low Carbon / Sustainable Design Studies
  • OCDEA – On Construction Domestic Energy Assessors
  • SAP Section 6 and Part L Option Engineering and Compliance Checks


Case Study: University of Manchester Sustainability Project

DSSR has been working with The University of Manchester to help deliver on its commitment to reduce its carbon usage and minimise its impact on the environment.


“DSSR recognises that meeting the needs of our society, without breaching the earth’s ecological boundaries, requires a paradigm shift in our behaviour.

We are committed to working with our clients to commission, design, and maintain buildings as indivisible components of a larger, constantly regenerating, and self-sustaining system, in balance with the natural world.”

      Fiona Williamson, DSSR Sustainability Lead

The Sustainability Lead for DSSR, Fiona is a Regional Director who has been with the company for over 23 years. She manages a multi-disciplinary team, with particular expertise in Sustainable Building Design, is a Chartered Engineer, and has been a Member of CIBSE for 16 years.

Fiona is a Low Carbon Energy Assessor LCEA (Scotland), BREEAM Assessor (NC & RFO), BREEAM Accredited Professional (AP), CIBSE Heat Network Consultant.


Case Study: The Event Complex Aberdeen (TECA)

DSSR is proud to be part of the multi-disciplinary team which delivered the world-class exhibition, conference and hotel facility in Aberdeen.