Our Industrial & Commercial Solutions
At Hill Grwp, based in Swansea and serving clients across the UK, we deliver custom-engineered GRP and steel-framed enclosures plus modular systems built for performance, durability, and compliance.
From housing to access systems, every product is available as a complete, factory-built package—including optional steel staircases—for seamless delivery and installation.
Crafted for resilience, our GRP double-skinned enclosures are weatherproof, corrosion-resistant, and built to last in industrial environments. Fire-rated and acoustic variants ensure safety and compliance across applications. Lightweight and prefabricated, they offer quick installation without sacrificing durability.
Our factory-built sprinkler pump rooms are fully compliant, pre-tested, and ready for rapid site integration. Tailored for fire protection projects, they help you meet UK regulatory standards while minimising downtime and site disruption.
Designed for critical infrastructure, our modular GRP and steel-framed substations deliver strength, weather resistance, and total compliance. Equipped with HVAC, lighting, and fire-rated features as needed, they’re engineered for long-term performance in utility, power, and oil & gas applications.
TopBox is our innovative roof access solution: a secure, weather-resistant kiosk that simplifies maintenance and installation of ducting, cabling, and HVAC systems. It’s engineered for safety, compliance, and durability—ideal for modern commercial and industrial rooftops.
Steel Staircases
To complement our enclosures and access systems, we provide robust steel staircases built for durability. Perfectly integrated with our GRP housings, pump rooms, and kiosks, they complete your package with seamless accessibility and long-term resilience.

Why Choose Hill Grwp
Hill Grwp provides fully compliant, factory-built solutions for the UK’s industrial, utility, and commercial sectors — from GRP housings and switchgear substations to sprinkler pump rooms, roof access systems, and steel staircases.
All available as complete packages for fast, hassle-free installation.
Let’s package your project from design to delivery