Cumbria O&M Services
Cumbria O&M Services is a UK family-owned engineering consultancy providing pre-operations, commissioning, maintenance, asset management, and project handover services to the nuclear sector and other regulated industries, primarily serving Sellafield Ltd and its Tier 1 supply chain.
- Company typePrivate
- Founded2014
- HeadquartersCarlisle, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Cumbria O&M Services does
Cumbria O&M Services Ltd (COMS) is a UK private limited company founded in 2014 and headquartered at Westlakes Science and Technology Park in Moor Row, Cumbria. The company delivers professional operations, maintenance, and engineering services to the nuclear sector and other regulated industries, with a core focus on Sellafield Ltd and the wider West Cumbrian nuclear supply chain. Its service portfolio spans five integrated areas: project handover (soft landings methodology), pre-operations/commissioning/start-up support, maintenance and engineering support, asset management, and training support (Systematic Approach to Training). Underpinning these services are domain-specific methodologies including Reliability Centered Maintenance (RCM) reviews, FMECA analysis, and Technical Basis of Maintenance task development, rather than a proprietary software platform.
The company is family-owned (Woodman and Garratt families), with no external institutional investors, and operates from 80 employees organized into 10 integrated delivery teams. Revenue is generated through professional services contracts delivered under framework agreements, preferred partner lists, and direct procurement channels, including the Sellafield Design Services Alliance (DSA) five-year framework, the Sellafield Programme and Project Partners (PPP) Preferred Partner List, a £2.6M Morgan Sindall contract for pre-operations services, and the Crown Commercial Service RM6242 public sector agreement. Major clients include Sellafield Ltd, LLWR, Atkins, Morgan Sindall Infrastructure, AXIOM, and BAE Systems. The company holds ISO 9001, 14001, and 45001 certifications alongside Cyber Essentials Plus, and has logged 500,000+ hours of professional service without a Lost Time Accident.
In 2023 COMS formed the Resolve Engineered Solutions joint venture with three Cumbrian SMEs (Forth Engineering, React Engineering, PAR Systems) to provide end-to-end engineering services, and in August 2024 it launched wholly-owned subsidiary COMS Energy Ltd to extend pre-operations and commissioning capabilities into decarbonisation, green hydrogen, wind, solar, carbon capture, and biomass energy verticals. The company is actively operating and growing, with senior leadership additions in February 2025 and PPP Preferred Partner List acceptance in March 2025.
Cumbria O&M Services firmographics
Firmographics- Name
- Cumbria O&M Services
- Legal name
- Cumbria O&M Services Ltd
- Website
- https://c-oms.co.uk
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Cumbria O&M Services is a UK family-owned engineering consultancy providing pre-operations, commissioning, maintenance, asset management, and project handover services to the nuclear sector and other regulated industries, primarily serving Sellafield Ltd and its Tier 1 supply chain.
- Ownership category
- akta.pro rank
Cumbria O&M Services industry classification
Industry- Product category
- Nuclear Engineering Consulting Services
- NAICS
- Architectural, Engineering, and Related Services (5413), Professional, Scientific, and Technical Services (54), Other Management Consulting Services (541618)
- SIC
- Services-Engineering Services (8711), Services-Management Consulting Services (8742)
- akta.pro primary industry
- Nuclear Plant O&M Services (EUAEAGAC)
- akta.pro secondary industry
- Systems Engineering & Technical Program Management (BPAHAIAI)
Keywords
Where Cumbria O&M Services is headquartered
LocationHeadquarters
- HQ city
- Carlisle
- HQ country
- United Kingdom
- HQ region
- Europe
Offices3 records
Markets served
Cumbria O&M Services business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Professional Services - Operations & Maintenance Engineering: Consulting and engineering services delivered by qualified professionals. Services include pre-operations, commissioning, maintenance engineering, asset management, training support, and project handover. Revenue generated through contract awards, frameworks, and preferred partner arrangements.
- Multi-year Framework Contracts: Long-term contracts with major clients such as Morgan Sindall (£2.6M over 6 years) and AXIOM DSA framework (5 years). Provides recurring revenue stability through established client relationships.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Enterprise Professional Services - Custom Pricing |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Cumbria O&M Services product offering
Product offeringCore offering
Cumbria O&M Services (COMS) is a professional consulting company delivering operations, maintenance and engineering services to the nuclear sector and other regulated industries. Its portfolio covers pre-operations, commissioning and start-up, project handover (soft landings), asset management, maintenance and engineering support, training support, and Reliability Centred Maintenance (RCM). The firm is primarily engaged through multi-year frameworks and partnerships with major Tier 1/2 contractors and end clients such as Sellafield Ltd, LLWR, Atkins, Morgan Sindall and BAE Systems.
Product overview
Cumbria O&M Services operates as a professional consulting company offering a unified portfolio of operations, maintenance, and engineering services to the nuclear sector and regulated industries. The core offerings include Project Handover, Pre-Operations/Commissioning/Start-Up, Asset Management, Maintenance & Engineering Support, and Training Support services. The company also operates a subsidiary, COMS Energy Ltd, which mirrors the parent company's capabilities while focusing on the broader energy sector including decarbonisation, hydrogen, wind, solar, and carbon capture. All services are delivered by a multi-skilled team of consultants and engineering problem-solvers, primarily serving clients across the UK nuclear industry with a focus on Sellafield and other regulated facilities.
Differentiator
Problem solved
Functional benefit
Products and services
- Project Handover (Soft Landings) Services Specialist soft landings services ensuring smooth transition from project to operational use for nuclear and regulated industry clients, including documentation compilation, asset transfer and delivery of client outcomes.
- Maintenance & Engineering Support Services Full lifecycle maintenance and engineering support services implementing asset management plans with proven engineering solutions to fine-tune asset and workforce performance for clients in nuclear and regulated industries.
- Pre-Operations, Commissioning and Start-Up Services Operational support for existing or new processes to assess performance, provide early identification of emerging issues, and deliver solutions that maximise operational availability during project transitions for nuclear and regulated industry clients.
- Asset Management Services Complete asset management lifecycle service for operators of nuclear facilities and other regulated sites, integrating centralised information systems for physical assets to support post-occupancy operational, maintenance, engineering and training requirements.
- Training Support Services Systematic Approach to Training (SAT) services including training needs analysis, design and delivery of tailored training programmes to develop skilled operational and engineering teams for nuclear and regulated-industry clients.
- Nuclear Engineering Consulting Expert consulting services for nuclear sector clients addressing engineering challenges in decommissioning, waste services, nuclear energy, power generation and innovative engineering solutions.
- Reliability Centred Maintenance (RCM) Services RCM-based maintenance reviews and analysis including Technical Basis of Maintenance, Failure Mode & Effect Analysis (FMECA), and spares and obsolescence analysis for nuclear and regulated industries.
- COMS Energy Ltd - Energy Sector Commissioning & Completions Subsidiary service line mirroring COMS' parent capabilities but focused on commissioning and completions for the energy transition, including decarbonisation of Oil & Gas, Green Hydrogen & Storage, Wind, Solar, Wave Energy, Carbon Capture and Storage, and Biomass Energy & Biofuels.
Quantifiable outcome
- Circa 50% reduction in lifetime maintenance costs achieved for a client through RCM-based maintenance strategy
- +3 more outcomes
Companies that use Cumbria O&M Services
Customer profileNamed customers8 records
Segments3 records
Ideal customer profiles3 records
Cumbria O&M Services technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Cumbria O&M Services partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core, growth, minor and foundational.
- Sellafield Ltd (PPP Programme)corePreferred Partner List (PPL) for Commissioning and Pre-Operations Professional Services to Programme and Project Partners (PPP) major project delivery framework. PPP mobilised in 2019 transforming major infrastructure delivery at Sellafield. Partners include KBR, Amentum, Morgan Sindall Infrastructure, and Altrad Babcock.
- Crown Commercial Service (CCS)growthNamed as supplier on CCS Construction Professional Services agreement (RM6242). Dynamic purchasing system available to UK central government departments, agencies, public bodies, and wider public sector. Enables delivery of project management, cost management, engineering, and design services to public sector.
- Resolve Engineered SolutionscoreJoint venture with three other Cumbrian SMEs: Forth Engineering (innovative engineering solutions), React Engineering (strategic project planning), and PAR Systems (mechanical handling). Provides end-to-end engineering services bringing together specialist capabilities into a complete package for nuclear and regulated industries clients.
- AXIOM (Design Services Alliance)corePart of the Design Services Alliance (DSA) at Sellafield Ltd. Alliance set up in 2012 with Sellafield as partner working alongside AXIOM (4-entity JV comprising Assystem, Jacobs, Mott MacDonald, and Progressive/Aecom and Cavendish Nuclear). COMS delivers Engineering and Maintenance, Operations Support, Commissioning and Start-Up as part of the DSA Framework. Five-year framework agreement.
- Gen2minorApprenticeship programme partner for engineering technician training. COMS sends apprentices to Gen2 for level 2 and 3 Diploma training with second year including placement with COMS teams.
- Morgan Sindall Infrastructurecore£2.6 million multi-year contract under Sellafield LINC with Tier 2 scheme. COMS delivers Pre-Operations services at Sellafield Ltd through Morgan Sindall who are Tier 2 approved suppliers awarded contract through Infrastructure Strategic Alliance (ISA) programme. Initial 3 years with review periods for further 3 years.
- Project Academy for Sellafield / University of CumbriaminorCOMS developed a course in commissioning provided to prospective project professionals in the area. Partnership with University of Cumbria delivering Project Academy for Sellafield - first of its kind in UK with 1300+ students. COMS delivers 'Commissioning and Pre Ops Fundamentals Awareness' course.
- AtkinsfoundationalFounding partnership that helped COMS enter the nuclear market. Atkins provided invaluable advice on insurance requirements, commercial routes into Sellafield Ltd, and pushed COMS along the correct route to become an approved supplier. This partnership was instrumental in helping a local start-up succeed in the Cumbrian nuclear market and helped COMS more than double its workforce.
Scale indicators8 records
Recent moves10 records
Expansion highlights5 records
Cumbria O&M Services competitors and assessment
Company assessmentBroad incumbents
- Amentum: Amentum is a US-listed engineering and technical services firm with strong UK nuclear presence, also a Tier 1 partner in the Sellafield PPP. Comparable on nuclear operations and engineering support, broader portfolio.
- KBR: KBR is a global engineering and government services contractor with a large UK nuclear practice and is one of the Tier 1 primes on the Sellafield PPP alongside COMS. Comparable on nuclear engineering and programme delivery though at much larger scale and global breadth.
- AtkinsRéalis (Atkins): AtkinsRéalis (formerly Atkins/SNC-Lavalin) is a large engineering consultancy with major nuclear practices; also the founding partner that helped COMS enter the Sellafield supply chain and continues as a Tier 1 partner. Comparable on engineering consulting scope though much larger and broader.
- Mott MacDonald: Mott MacDonald is a global engineering consultancy with a substantial nuclear practice and is a partner within AXIOM at Sellafield alongside COMS. Comparable on engineering consulting scope though much larger and more diversified.
- Altrad Babcock: Altrad Babcock delivers engineering, project management, and site services to UK nuclear sites including Sellafield, and is a Tier 1 PPP partner. Comparable on operations and engineering support at Sellafield though operates at significantly larger scale.
- Jacobs: Jacobs is a global engineering consultancy and owner of Nuvia, active across Sellafield and the broader UK nuclear sector, including as an AXIOM JV partner. Comparable on engineering services scope, with much broader services portfolio.
Direct peers
- Nuvia: Nuvia (a Jacobs subsidiary) delivers nuclear engineering, operations, decommissioning, and waste-management services across the UK. Direct peer with overlapping scope into Sellafield and similar specialist methodologies around safety case and operations support.
- Cavendish Nuclear: A wholly-owned subsidiary of Babcock International, Cavendish Nuclear provides decommissioning, engineering, and safety-case consultancy services to the UK nuclear sector, including at Sellafield. It is a direct peer given overlapping pre-operations, commissioning, and asset-management offerings and shared Sellafield supply chain presence.
- Assystem: Assystem is a France-headquartered engineering services firm focused on complex infrastructure including nuclear; it is one of the four JV partners in AXIOM, the same Sellafield Design Services Alliance framework in which COMS delivers engineering and maintenance support. Highly comparable business model and customer.
Regional players
- Morgan Sindall Infrastructure: Morgan Sindall's infrastructure division holds the £2.6M Tier 2 contract under which COMS delivers Pre-Operations services at Sellafield and won COMS the SME of the Year 2023 award. Comparable via overlapping customer base and project scope, though operating as a Tier 1 main contractor rather than specialist pre-operations partner.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Cumbria O&M Services social profiles
Digital presenceCumbria O&M Services compliance and trust
Trust signalCompliance5 records
Cumbria O&M Services financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cumbria O&M Services leadership team
Management profileNumber of profiles
Profiles11 records
Cumbria O&M Services subsidiaries and ownership
Company hierarchySubsidiaries1 record
Cumbria O&M Services funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cumbria O&M Services M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Cumbria O&M Services
What does Cumbria O&M Services do?
Cumbria O&M Services (COMS) is a professional consulting company delivering operations, maintenance and engineering services to the nuclear sector and other regulated industries. Its portfolio covers pre-operations, commissioning and start-up, project handover (soft landings), asset management, maintenance and engineering support, training support, and Reliability Centred Maintenance (RCM). The firm is primarily engaged through multi-year frameworks and partnerships with major Tier 1/2 contractors and end clients such as Sellafield Ltd, LLWR, Atkins, Morgan Sindall and BAE Systems.
Is Cumbria O&M Services a public or private company?
Cumbria O&M Services is a private company. It is classified as family owned and is currently operating.
When was Cumbria O&M Services founded?
Cumbria O&M Services was founded in 2014. It employs 11 to 50 people.
Where is Cumbria O&M Services based?
Cumbria O&M Services is headquartered in Carlisle, United Kingdom, in the Europe region.
How does Cumbria O&M Services make money?
Two revenue lines are on record. Professional Services - Operations & Maintenance Engineering is the primary driver. The others are multi-year Framework Contracts.
Who are Cumbria O&M Services's main competitors?
Broad incumbents on record are Amentum, KBR, AtkinsRéalis (Atkins), Mott MacDonald, Altrad Babcock and Jacobs. Direct peers are Nuvia, Cavendish Nuclear and Assystem. Morgan Sindall Infrastructure is listed as a regional player.
Does Cumbria O&M Services have an API?
No public API is recorded for Cumbria O&M Services.
What industry is Cumbria O&M Services in?
Cumbria O&M Services's product category is Nuclear Engineering Consulting Services. Its primary akta.pro industry code is EUAEAGAC, Nuclear Plant O&M Services, with a secondary code of BPAHAIAI, Systems Engineering & Technical Program Management. Its NAICS code is 5413 and its SIC code is 8711.