Accessing rooftop systems safely shouldn’t be a challenge. That’s why we developed TopBox — our purpose-built roof entry kiosk designed to simplify ductwork, pipework, and cable installations in commercial buildings.

Across this multi-site project area, our client required a series of reliable and compliant rooftop entry system to safely house critical equipment. Every location was different - varying roof layouts, equipment footprints, and operational needs - which made TopBox the ideal solution.  TopBox is our fully customisable GRP roof entry system, developed to give facilities teams the flexibility, safety, and durability they need… without disruption to ongoing operations. 

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

Our TopBox GRP roof entry system now installed at a UK Police firing range, providing secure, weatherproof access while maintaining a clean and low-profile finish.

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 the race toward a more sustainable future, every part of the construction process is under scrutiny - from the materials we use to the way we design, manufacture, and deliver projects. Across the industrial and commercial landscape, one material continues to demonstrate its relevance and value in a greener world: Glass Reinforced Plastic (GRP). 

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.

We designed, manufactured, and supplied 2no. GRP TopBoxes specifically for a UK police firing range. Each unit was engineered to house ductwork and electrical containment in a safe, secure, and weather-protected environment. Key features include: - Integrated Access Hatches - Water-Sealed Construction - Durable GRP Fabrication - Custom Design These TopBoxes demonstrate our ability to provide specialist GRP solutions for challenging environments.

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

Designed and built for industrial and commercial environments, TopBox provides: ✅ Safe, enclosed roof entry ✅ Fast and controlled access for maintenance teams ✅ A durable GRP construction built to perform in all weather conditions This unit is part of our growing line of roof entry solutions, helping clients improve safety, efficiency, and compliance on their sites. If your project needs a reliable and long-lasting roof entry enclosure, Hill Grwp’s TopBox is ready to delive

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:

In modern industrial and commercial construction, roof entry enclosures are a critical but often underestimated requirement. Whether it is for ductwork, pipework, or cable entry systems, the way services are routed through a building envelope has a direct impact on safety, compliance, and long-term operational performance. 

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.

GRP (Glass Reinforced Plastic) enclosures are commonly used across utilities, energy, and industrial infrastructure projects. At Hill Grwp, we’ve delivered countless GRP housing solutions for applications like pump stations, electrical equipment, and metering.  Here are some insights we’ve gathered from working with GRP housings on a day-to-day basis

Behind every ⚡ “Danger of Death – Keep Out” sign is a responsibility:  - To protect the public  - To secure critical assets  - To support the industries that power our everyday lives. At Hill Grwp Ltd, safety isn’t just a feature of our GRP buildings—it's our promise.  

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

Our team is currently hard at work delivering multiple switchgear substations for valued clients. Each project is at a different stage of the build, and it’s great to see the progress taking shape day by day.