Choosing the right GRP (Glass Reinforced Plastic) enclosure is essential for protecting valuable equipment, maintaining site safety, and ensuring long-term reliability in demanding industrial environments. While many GRP manufacturers produce good-quality composite enclosures, very few are able to integrate fully engineered steel doors into their GRP buildings. 

We’re excited to share our latest pre-packaged pump room, designed with both functionality and safety in mind. This particular unit features a specially attached access lid, complete with a high-quality gas strut to hold it securely open.

From design → manufacture → logistics, our team handled every detail to ensure safe delivery and smooth installation on site. - Heavy-duty industrial equipment - Harsh outdoor environments - Compliance and long-term access needs

At Hill Grwp, we design and deliver fully integrated electrical layouts, tailored to your exact specifications. Inside each substation, you’ll find pre-installed switchgear, transformers, control panels, and protection systems, all factory-tested for smooth, fast commissioning.

In modern industrial and construction settings, materials must perform under pressure — offering strength, protection, and longevity. One material that consistently meets these standards is GRP (Glass Reinforced Plastic). At Hill Grwp, we design, and manufacture precision-built GRP enclosures and modular buildings engineered to protect essential equipment across the UK’s infrastructure, utilities, and energy sectors. 

From Our Factory to the Skyline! Another set of TopBox roof entries, freshly completed and waiting for dispatch. Right now they’re standing ready on the factory floor — but soon they’ll be lifted into place on rooftops, providing safe, compliant entry and long-term protection for critical services.

We’ve just completed the delivery of our latest GRP substation, ready for installation on site. This GRP electrical substation enclosure demonstrates key advantages for industrial and utility applications:

We recently designed, manufactured, and delivered a bespoke GRP substation with a C5 Corrosion Resistant painted steel base. Engineered for durability, safety, and operational efficiency, this unit demonstrates our capability to combine GRP technology with structural steel elements to meet complex site requirements.

What does it take to get a rooftop entry system ready for delivery? For our latest Hill Grwp TopBox project, the answer is precision engineering, careful planning, and teamwork at every stage. This custom-built TopBox roof entry enclosure has just left our facility and is heading to site, where it will provide a safe, reliable, and cost-effective solution for controlled roof entry. At Hill Grwp, we design and manufacture TopBox GRP enclosures to make roof entry safer, simpler

Hill Grwp has successfully designed, manufactured, and delivered another bespoke GRP substation enclosure, fully pre-fabricated in-house to meet our client’s precise specifications. This solution demonstrates our commitment to delivering safe, reliable, and high-quality enclosure solutions for industrial and infrastructure projects:

This latest build was designed, manufactured, and fully fitted out in-house to meet our client’s exact requirements. Constructed from GRP (Glass Reinforced Plastic) for maximum durability, weather resistance, and low maintenance. Fully equipped with internal electrics, lighting, and access points for easy installation and long-term reliability.

At Hill Grwp, we design and manufacture robust GRP switchgear substations and oil & gas metering housings built to meet the most demanding industry standards.

This particular unit was built for a client with year-round exposure to harsh conditions — and with a GRP outer shell and a galvanised steel base, it’s engineered for reliable, low-maintenance protection. 

Another pre-packaged GRP Sprinkler Pump House from Hill Grwp on the road — delivered safely and on time to another satisfied client in the UK.  This modular GRP housing was fully fabricated off-site in our facility and is ready for rapid installation, helping our client stay on schedule and compliant with fire protection standards. 

Protect your critical infrastructure from the elements with Hill Grwp’s GRP enclosures — engineered for durability, safety, and long-term performance in tough environments.