OCS

What OCS does

OCS is a UK-based facilities management company that delivers integrated building services across hard services (mechanical, electrical, and building engineering), security, and specialist technical operations to commercial, government, medical, and data centre clients. The company's core capability is self-delivered engineering at scale: following the December 2025 acquisition of Emcor UK's building services segment for approximately £190 million and the earlier December 2024 acquisition of FES FM and FES Support Services, OCS's technical and engineering division comprises more than 7,000 engineers and generates annual revenues exceeding £1 billion. Specialist capabilities include high-voltage environment operations (24/7 monitoring, planned and preventive maintenance, and incident response for data centre substations) and self-delivered canine security operations inherited from City Group Security, a top-30 UK security business OCS acquired in May 2026.

OCS earns revenue primarily through multi-year facilities management contracts, combining bundled hard services (HVAC, electrical, plumbing), dedicated on-site engineering teams, and security services delivered to enterprise and public-sector estates. Go-to-market is anchored by long-term relationship contracts and a London/South East operating density that has been reinforced through acquisitions, with a geographic expansion into Ireland via the March 2026 Top Security deal. The business model is asset-light in property but capital-intensive in workforce, with the £190M Emcor UK deal and parallel bolt-on activity indicating an aggressive inorganic growth strategy financed by acquisition capital.

Important data caveat: a separate source describes a small US-headquartered company "Optimum Computer Solutions" at ocscorp.com, an IT partner for public safety with 11–50 employees and no overlap with the UK FM operations described above. The two entities appear distinct, and this analysis is anchored to the UK FM OCS described across the M&A, revenue, and market data sources.

Name

OCS

Legal name

Optimum Computer Solutions

Website

https://ocscorp.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

OCS is a UK-based facilities management company delivering integrated hard services, security, and specialist technical operations to commercial, government, medical, and data centre clients, with 7,000+ engineers and over £1B in annual technical revenues.

Ownership category

akta.pro rank

Product category

IT Services and Consulting

NAICS

Computer Facilities Management Services (541513), Electronic and Precision Equipment Repair and Maintenance (81121)

SIC

Services-Facilities Support Management Services (8744)

akta.pro primary industry

Data Center Operations & Managed Services (Remote Hands, NOC/SOC) (HDABANAA)

Keywords

• IT services
• Public safety solutions
• Managed IT support
• Computer solutions
• Government IT consulting

Headquarters

HQ city

The Woodlands

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Core offering

OCS (Optimum Computer Solutions) is an IT partner that provides information technology solutions and services to public safety organizations and commercial businesses. The firm serves the commercial, professional, government, and medical sectors, delivering IT products, services, and technology support tailored to operational and mission-critical needs.

Differentiator

Problem solved

Functional benefit

Products and services

• IT Solutions for Public Safety
• Business IT Solutions

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and minor.

• City Group SecuritycoreStrategic or Co-development Partner · 12 May 2026OCS completed the acquisition of City Group Security, a UK-based security company founded in 1993 and ranked among the top 30 security businesses in the country. The acquisition brings 600 new employees and adds specialist capabilities including self-delivered canine security operations, while expanding OCS's operational density across London and the South East.
• Top SecuritycoreStrategic or Co-development Partner · 19 March 2026OCS strengthened its capabilities in Ireland through the acquisition of Top Security, expanding geographic presence into the Irish market.
• Emcor UKcoreStrategic or Co-development Partner · 5 December 2025OCS completed the acquisition of the UK building services segment of Emcor UK for approximately £190 million (around $250 million). Combined with its December 2024 acquisition of FES FM and FES Support Services, OCS's technical and engineering division now comprises more than 7,000 engineers and generates annual revenues exceeding £1 billion.
• FES FM and FES Support ServicescoreStrategic or Co-development Partner · 1 December 2024OCS doubled its hard services division through the acquisition of FES FM and FES Support Services in December 2024, significantly expanding engineering capabilities and service capacity.
• Major Data Centre OperatorminorOthersOCS was awarded a contract to operate and maintain the primary electrical substation for a major, unnamed data centre development. Under the terms of the contract, OCS will deploy a dedicated on-site engineering team to provide 24/7 operational monitoring, planned and preventive maintenance, and incident response in high-voltage environments.

Scale indicators8 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Mitie Group: UK-listed facilities management and security services group serving commercial, public sector, and critical infrastructure clients. Directly comparable to OCS given overlapping hard services, security, and engineering scale in the UK market.
• EMCOR Group: US-listed provider of mechanical and electrical construction, building, and industrial services. Directly comparable as the parent that sold its UK building services segment to OCS for £190M, evidencing near-identical hard-services capabilities.
• Serco Group: UK-listed outsourcing group with facilities management, security, and public-sector contracts comparable to OCS's commercial/government/medical customer mix and integrated service model.
• Atalian Servest: UK and Ireland-focused FM and security services provider with comparable hard-services, cleaning, and security portfolio. Directly comparable as a mid-large UK/Ireland FM peer competing in the same tenders.

Broad incumbents

• Sodexo: Global facilities management and food services major with significant UK hard-services and security exposure. Comparable as a larger incumbent operating in the same FM verticals at broader international scale.
• ISS A/S: Global integrated facility services provider with substantial UK presence across cleaning, security, and technical services. Comparable as a broad incumbent competing for the same enterprise hard-services and security tenders.
• Compass Group: UK-headquartered global support services group with facilities management and security adjacencies. Comparable for its UK corporate services scale and cross-vertical bundling similar to OCS's integrated offering.
• G4S (Allied Universal): Global security services provider, now part of Allied Universal, with UK security and facilities management operations. Comparable to OCS's City Group Security/Top Security capabilities and large-scale manned guarding footprint.
• CBRE Group: Global commercial real estate services firm with a substantial facilities management division serving enterprise and data center clients. Comparable for hard services, integrated FM, and data center operations overlap.
• JLL (Jones Lang LaSalle): Global real estate services firm with integrated facility management, engineering, and critical-environment services. Comparable for its data center and corporate real estate hard-services portfolio overlapping OCS's positioning.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OCS