• Rows of industrial air conditioning units and piping on a rooftop under a clear blue sky. Diagonal lines in various colors overlay the image, adding a geometric design element.

Hard FM Services

With thousands of mobile and static engineers delivering UK-wide coverage, OCS Hard Services provides the scale and expertise to deliver both multi-site, route-based services and dedicated static site engineering support for projects.

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OCS Hard Services Division in Numbers

  • 150 years' experience

    125yrs

    Experience in technical services and innovation

  • Technical Inspections

    850000+

    Technical inspections completed every year

  • Reactive work

    240000+

    Reactive work orders carried out each year

  • Technical Engineers

    4000+

    In-house technical and engineering colleagues

Delivering Hard Services Excellence and the Best Customer Outcomes

A person wearing a hard hat, safety glasses, and a high-visibility vest stands confidently with folded arms in an industrial setting. Safety equipment and piping are visible in the background.

Hard Services Expertise for Every Sector

Our in-house capabilities include mechanical, electrical, and plumbing (MEP), HVAC installation and maintenance, prefabrication, structural maintenance and decarbonisation and energy solutions.

We enhance performance and drive sustainability across critical infrastructure and essential facilities, making OCS the UK’s leading Hard Services team. 

Capital Projects
Planned & Preventative Maintenance (PPM)
Reactive Maintenance & Minor Works
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Delivering Capital Projects, Planned Maintenance, Reactive Repairs & Minor Works

  • Three construction workers in high-visibility jackets and hard hats stand in a field, reviewing plans on a clipboard. Industrial scaffolding and cloudy skies are in the background.

    Capital Projects

    We specialise in large-scale capital projects, providing sustainable construction and renovation solutions from concept to completion, ensuring long-term efficiency, resilience, and compliance.

  • A worker in high-visibility clothing and a hard hat uses a tablet to inspect an open electrical panel. The panel contains wires and circuit breakers. The setting appears to be an industrial or construction site.

    Planned Preventative Maintenance (PPM)

    Scheduled checks and servicing prevent breakdowns, ensuring efficiency and minimising failures. We offer statutory-compliant, SFG-integrated, or bespoke data-driven maintenance solutions.

  • Two workers wearing safety gear inspect machinery in an industrial setting with a network of grey pipes and valves overhead. The sky is partly cloudy in the background.

    Reactive Maintenance

    Rapid, specialist response to diagnose and resolve issues, minimising downtime and maximising efficiency. Supported by agile workforce management and real-time route planning for seamless operations.

  • Two individuals wearing hard hats and orange safety vests work on rooftop HVAC units. One person kneels and uses a tool on a unit, while the other stands in the background. A cityscape is visible in the distance. Sky is clear and sunny.

    Minor Project Works

    Targeted upgrades—including lighting enhancements, boiler replacements, and full fit-outs—designed to improve efficiency, enhance reliability, and optimise overall performance.

Technical Services

Go beyond reactive maintenance—achieve resilient, safer, and more sustainable operations that align with your strategic goals.

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  • Mechanical, Electrical and Plumbing

    Mechanical, Electrical and Plumbing

    Comprehensive MEP solutions covering design, installation, and maintenance to ensure peak performance and compliance.

  • Fire Safety and Security Systems ​

    Fire Safety and Security Systems ​

    We design, install, test, and maintain critical life safety systems for smooth business operations.

  • Heating, Ventilation, and Air Conditioning (HVAC)

    Heating, Ventilation, and Air Conditioning (HVAC)

    Advanced climate control solutions for large-scale facilities and critical environments.

  • Building Fabric Maintenance

    Building Fabric Maintenance

    We specialise in building fabric maintenance, ensuring safety, durability, and alignment with your operational goals.

  • Asset and Lifecycle Management

    Asset and Lifecycle Management

    Comprehensive asset management with full lifecycle, cost-driven strategies aligned to ISO 55000 standards.

  • Mobile Delivery and Help Desk

    Mobile Delivery and Help Desk

    Our expert mobile teams and 24/7 help desk ensure seamless, nationwide service with over 85% self-delivery.

Energy Services

We empower our customers to achieve net zero by focusing on sustainability, efficiency, and carbon reduction.

  • Two workers in orange safety vests and white helmets stand between rows of solar panels, inspecting them. The panels are aligned in a field under a clear blue sky, capturing sunlight for energy.

    Energy Reporting, Compliance and Net Zero Consultancy Services

    Comprehensive management, compliance, and Net Zero services to help customers achieve sustainability goals and meet requirements.

  • A person wearing a white hard hat, safety goggles, and an orange safety vest is using a tablet in an industrial setting. They are standing indoors with a blurred background of metal beams and machinery.

    Smart Building and Asset Optimisation

    Advanced technology and data-driven insights to enhance efficiency, sustainability, and performance. ​

  • Pipes with red and black protective coatings are secured in a metallic structural frame outdoors. Silver clamps and bolts fasten the pipes, which are positioned parallel to each other, with clear skies visible in the background.

    Decarbonisation and Energy Efficiency Projects

    Engineered solutions to reduce energy, carbon emissions and cost, enhancing resilience and building health.​

  • A worker wearing a white hard hat and orange safety vest kneels on a solar panel installation, examining a tablet. The sky is clear and blue, reflecting off the solar panels.

    Low Carbon Energy Solutions

    Sustainable energy infrastructure, EV solutions, solar PV, battery storage and renewable heat networks.​

Capital Projects

Delivering large-scale capital projects with sustainable, efficient, and resilient construction and renovation solutions.

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  • End-to-End Design and Build Projects

    End-to-End Design and Build Projects

    Full-cycle design and construction solutions tailored to clients’ infrastructure and operational needs​.

  • Lifecycle Replacement Programmes

    Lifecycle Replacement Programmes

    Planned asset replacement strategies to maintain operational efficiency, reliability, and cost control over the asset lifecycle.​

  • Plant Replacement and Modernisation

    Plant Replacement and Modernisation

    Upgrades and modernises critical plant equipment to improve efficiency, reliability, and compliance.​

  • Communications and Network Infrastructure

    Communications and Network Infrastructure

    Design, install, and manage high-performance fibre, LAN, wireless, and IP telephony networks for critical sectors.​

  • High Voltage (Above 33kV)

    High Voltage (Above 33kV)

    OCS delivers expert high-voltage solutions above 33kV, ensuring reliable power with advanced infrastructure and safety.

  • Total Facilities Management

    Total Facilities Management

    Ensuring long-term value and operational efficiency of capital projects through facilities management services.

Accreditations & Certification

Safety comes first. Backed by expert training, top industry accreditations, and award-winning standards, our teams deliver consistency, compliance, and best practices every time.

OCS QHSE Policy
  • HMS Belfast
    Did You Know?

    HMS Belfast

    Our Hard Services team maintains the historic WW2 Royal Navy Cruiser, HMS Belfast, which played a significant role in the Arctic convoys to the Soviet Union in 1943! Our technicians ensure it remains in top condition, preserving its legacy for future generations.

  • British Geological Survey
    Did You Know?

    British Geological Survey

    The Geological Walkway at BGS showcases nearly 3 billion years of Earth’s history in 130 meters with 40 types of rock! Our Hard Services team replaced a rusted drain, meticulously documenting and storing each stone, ensuring visitors can continue to enjoy these pieces of Earth’s history.

  • Shawfair Development
    Did You Know

    Shawfair Development

    FES Support Services, part of OCS, will save 2,500 tonnes of CO2 per year at Shawfair—equivalent to removing 1,200 cars from the road. Our team is supporting the development of 3,000 homes, schools, and 1,000,000 sq ft of commercial space near Edinburgh, focusing on sustainability.

  • Queen Victoria Memorial Fountain
    Did You Know?

    Queen Victoria Memorial Fountain

    The Fountain stands 25 meters tall and weighs 2,300 tonnes—equivalent to 1,150 industrial generators or 460,000 car batteries! Our hard services team regularly polishes this iconic monument to maintain its intricate carvings and gleaming bronze.

  • London
    Did You Know?

    London

    The capital still has around 1,300 gas street lamps in areas like Covent Garden, Westminster, and the Royal Parks. Our Hard Services team maintains these charming lights, ensuring they shine brightly every evening. Some lamps are over 200 years old and need regular winding and adjustment. The mantles are replaced, and the glass is polished to perfection.

  • City of Glasgow College
    Did You Know?

    City of Glasgow College

    FES FM and Support Services, now OCS, installed 1,062,167 meters of Category 6A cable at the City of Glasgow College, enough to stretch across Great Britain. This project equips the college with high-speed data communication, supporting thousands of students and staff, and showcases our expertise in large-scale technical installations.

  • Scottish Canals
    Did You Know?

    Scottish Canals

    Our Hard Services team supports Scottish Canals properties, including the world-famous Falkirk Wheel, a unique rotating boat lift. Our technical services ensure smooth operation of the visitor centre, which attracts around 500,000 guests annually. OCS is proud to maintain the surrounding properties and ensure safe, efficient, and sanitary conditions at this engineering marvel.

Explore the latest news and projects in Hard Services we deliver to our customers

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A worker in a white hard hat and orange safety vest is using a smartphone while inspecting machinery outdoors. The equipment includes various pipes and gauges. The setting appears industrial under a clear sky.

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