About Us

Cumbria O&M Services, COMS, are a leading UK provider of Operational, Maintenance and Engineering services to regulated industries nationwide

We pride ourselves on our expert knowledge of pre-operations requirements for the transition of major projects into fully compliant and operational facilities including the synergies we bring to the integration of new assets into operational plant, processes and systems.

We provide innovative O&M solutions throughout normal operations to extend asset life, productivity and regulatory compliance. Our services cover full asset lifecycle stages including post operational and decommissioning activities.

We offer a full Pre-Operations and O&M Delivery capability for new build projects supporting the full project lifecycle from concept design through to transition into operations and the provision of a SQEP capability to support normal operations.

We hold a broad range of operational and maintenance capabilities based on a strong demonstrable working knowledge of nuclear site licences, associated systems, processes and procedures.

Pre-Operations and O&M activities can be delivered on behalf of the project’s principal contractor to provide the intelligence to ensure end user requirements are fully met; or can be delivered directly to the client’s project or operations teams thereby fulfilling the role of Intelligent Customer.

We are comfortable working as part of an integrated team to a defined set of deliverables, on subcontract basis to a specified scope or to assume responsibility for the full Pre-Operations function of a given project.

Our existing O&M contracts cover fully operational plants, system upgrades, new build project facilities and decommissioning activities. We work closely with stakeholder groups including; engineering, operations, maintenance, design, pre-ops and project teams.

We currently contract directly with two NDA site licence sites and with multiple tier 1 and 2 suppliers.

Our work has been subject to various client and ONR reviews, all receiving favourable outcomes and feedback.

Operational, Maintenance & Engineering Services to regulated industries

Our Mission

To provide a world-class operations and maintenance engineering support capability to regulated industries, specialising in pre-operations delivery on major projects.

Our Vision

To be recognised globally as industry leaders for operations & maintenance engineering excellence and standardisation.

Our Core Values

These values define how we want to conduct ourselves and our business, and help us to create value for our customers, our employees and our organisation.


We maintain a safe working environment for our personnel, clients and general public


We develop and deliver cost effective and fit for purpose solutions

Customer Value

We put the current and future needs of our customers at the heart of everything we do


We strive to get better, smarter and more innovative and be the best in everything we do


We build and nurture long-term relationships with our employees, customers and suppliers


We support and value our colleagues and work together as a team in an open and honest way

Full Project Handover, Pre-Operations & Maintenance Support

COMS proudly hold the following certifications and memberships: