New Build

We offer programme and project management, safety case, environmental and liabilities consultancy, training and engineering support across the whole new nuclear build process. As a Nuclear Site Licensee, Cavendish Nuclear also provides independent regulatory and licensing compliance advice.

Cavendish Nuclear is currently in a joint venture with the French company Boccard for the delivery of the mechanical installation package on the Hinkley Point C project.

Key Contracts:

  • Hinkley Point C Balance of Nuclear Island Installation
  • Horizon, Hitachi-GE Nuclear Energy Engineering Framework contracts

Key customers:

  • EDF Energy
  • Horizon / Hitachi

Nuclear Services

With the largest nuclear-capable workforce of any UK contractor and a proven supply chain capability we have an exceptional track record in concept design, engineering and delivery of major civil and defence nuclear facilities for customers such as Sellafield and AWE. Cavendish Nuclear also employs about 300 people full-time on its work supporting EDF Energy to maintain and improve the electricity generation across the EDF nuclear reactor fleet.

Additionally our Nuclear Services business provides specialist services in radiological assay and environmental analysis in support of operating plants, decommissioning projects and waste management facilities.

Key contracts:

  • Sellafield Pile Fuel Cladding Silo
  • Sellafield Silo Maintenance Facility
  • Sellafield Design Services Alliance
  • EDF lifetime agreement
  • AWE Mensa

Key customers:

  • Sellafield
  • EDF Energy
  • AWE
  • Magnox
  • MoD


Our capability and experience in the complete decommissioning of nuclear equipment and facilities allows us to provide fully integrated solutions that can be delivered in-house for both UK and international customers. Safety and quality are paramount through all aspects of our decommissioning work.

We operate 13 out of the UK’s 37 licensed sites. As part of the Parent Body Organisation for Dounreay and Magnox, we are contracted by the Nuclear Decommissioning Authority (NDA) to safely decommission and restore these 20th century legacy nuclear sites.

Internationally we are focussed on Japan with particular attention on the long term relationships that are developing with HGNE and Shimizu, with both of whom we have Memoranda of Understanding in place for decommissioning projects.

Key Contracts

  • Magnox decommissioning
  • Dounreay decommissioning
  • Atomic Weapons Establishment decommissioning
  • Fukushima consulting

Key Customers:

  • Nuclear Decommissioning Authority (NDA)
  • AWE
  • HGNE
  • Shimizu