M+W Group has been involved in the nuclear industry for over 40 years, operating across the nuclear market for new-build, decommissioning, research and development and asset life extension as well as specialist HVAC and containment solutions worldwide. It is our ability to integrate technology with intelligent buildings and lean construction expertise that enables performance certainty for our clients.

Applying the latest interoperable Integrated Management Systems we provide a complete project service to provide key nuclear systems through to full Engineering, Procurement and Construction (EPC) facility delivery.

Our capability encompasses:

  • New Build
  • Decommissioning
  • Research and Development
  • Asset Life Extension

New Build

Providing complete Nuclear HVAC systems for over 40 years, M+W Group is actively involved in the current new build programs in both the UK and Finland. With our in-house capability for design, manufacture, procurement, construction and commissioning, as well as working with our key partners, we are able to provide Owners Engineering services through to the delivery of full EPC integrated package solutions.


M+W Group is delivering decommissioning projects on the world’s most complex nuclear sites. These range from developing decommissioning solutions from conceptual design and safety case through to the full EPC delivery of new facilities.

Research and Development

M+W Group has a notable record of involvement in globally significant research and development projects.  Working on many of the world’s most complex facilities, our clients recognize M+W Group has the know-how to deliver the next generation of advanced technology energy assets. An example of this is M+W Group’s role in the international ITER program where we are playing a key role in the design, engineering and constructing of the major experimental fusion reactor aiming to transform our future energy mix.

Asset Life Extension

Extending the life of an existing asset requires the technical expertise to address unique challenges, applying specialist skills and experience, often on ‘live’ operational sites. With integrated design, engineering, fabrication, process, construction and commissioning capability in-house, M+W Group enables existing assets to meet the next generation of challenges.

A leader in the delivery of specialist solutions and facility upgrades M+W Group has helped to maintain and prolong the performance of industry critical facilities at many of Europe’s most important nuclear sites.

Project Showcase

Selected Projects

M+W Group Worldwide

We are a globally operating Company with around 5,500 employees, locations and business activities in almost every country in the world.