Hill Grwp

About Hill Grwp

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Hill Grwp Ltd - Bespoke GRP and Steel Enclosure Manufacturer.

Hill Grwp Ltd is a UK manufacturer specialising in bespoke GRP and steel enclosures for industrial, commercial, utility, fire protection and infrastructure projects.

Based in Swansea and supplying projects across the UK, we design, manufacture, deliver and install project-specific enclosure solutions built around each client’s requirements. Our work includes equipment housings, kiosks, modular buildings, pump room enclosures, substations, metering housings, steel bases and external access systems.

Our services include GRP Weatherproof Housings and Enclosures, designed to protect electrical, mechanical, plant and utility equipment in external environments.

We manufacture Pre-Packaged Sprinkler Pump Rooms for fire protection projects, with enclosures designed around pump sets, pipework, access, ventilation, service openings and site installation requirements.

We also design and manufacture Switchgear Substations and Oil and Gas Metering Housings, including GRP and steel housings for switchgear, transformers, metering systems, cable management and ventilation requirements.

Our TopBox Roof Entry Kiosk provides a bespoke GRP roof entry solution for ducting, pipework, cable entry and service penetrations into commercial and industrial buildings.

Hill Grwp Ltd also manufactures Steel Bases for GRP and Steel Enclosures, with options for service openings, lifting details, fixing requirements, hot-dip galvanised finishes and C5 painted steel systems.

For projects requiring safe external access, we provide External Steel Staircases and Access Platforms designed around site layout, enclosure position, access height and maintenance requirements.

We can also support Enclosure Repairs, Refurbishment and Upgrades, helping clients repair, modify or improve existing GRP and steel enclosures where suitable.

Alongside Hill Grwp Ltd, we operate Insulation and More, a related trading brand supplying insulation, cladding, trace heating, valve jackets and technical building services products. Insulation and More supports contractors, engineers, facilities teams and building services projects through its dedicated website.

Insulation and More may also support selected Hill Grwp Ltd projects as a supplier of insulation and related technical products where required.

Hill Grwp Ltd works with main contractors, M&E contractors, fire protection specialists, utility providers, consultants, engineers and industrial project teams across the UK. Every project is built around the specification, equipment layout, access needs, service entries, ventilation, finishes, steelwork and site requirements.

Visit Hill Grwp Ltd to find out more about our bespoke GRP and steel enclosure solutions.

Our expert team combines industry knowledge with cutting-edge manufacturing techniques to support projects across the UK and internationally. With a commitment to customer satisfaction and sustainability practices, Hill Grwp is your trusted partner for engineering enclosures and access systems.

TopBox - our cutting-edge, purpose-built roof access system designed to simplify the installation of ductwork, pipework, and cabling with maximum efficiency and safety.

Engineered with strength and compliance in mind, TopBox provides a secure, weatherproof entry point for contractors and maintenance teams. Whether for HVAC, electrical, or mechanical applications, TopBox ensures safe, compliant access while delivering long-term durability in all weather conditions.

GRP Weatherproof Housings and Enclosures.
Our custom industrial GRP enclosures are expertly designed to safeguard sensitive equipment, electrical infrastructure, and mechanical systems from harsh weather conditions and environmental challenges. Built to last, these prefabricated utility enclosures UK provide reliable, low-maintenance protection to keep your operations running smoothly, no matter the environment.

Pre-Packaged Sprinkler Pump rooms - Compliant Fire Protection You Can Trust.
Our pre-packaged sprinkler pump rooms provide reliable, ready-to-install fire protection solutions designed to meet the stringent demands of commercial and domestic properties across the UK. Manufactured using durable GRP housing and engineered to comply fully with the latest UK fire safety regulations, our pump rooms deliver peace of mind and superior performance when it matters most.