Specialist Mechanical Handling, Functional Safety, and Cyber Security Engineering Consultancy
Delivering technical authority, complex system integration, and principal engineering governance across mission-critical, heavily regulated sectors.
Core Consultancy Services
Electrical, Control & Instrumentation (EC&I) Design & Integration
Full lifecycle FEED, detailed design, and commissioning oversight for DCS, PLC, SCADA, high/low voltage distribution (11kV/400V), MCCs, VSDs, and process instrumentation.
Functional Safety & Process Safety Management
End-to-end compliance with IEC 61508, IEC 61511, and ISO 13849. Expertise in SIL loop calculations, HAZOP/HAZAN facilitation, SRS authoring, and safety-critical system verification.
Industrial Cyber Security (OT Security)
Strategy and defense-in-depth deployment for Critical National Infrastructure (CNI) following ONR/HSE guidelines. Network segmentation (Purdue Model), firewalls, intrusion detection, and secure data transfer protocols.
Technical Authority & Intelligent Customer Advisory
Acting as client-side Technical Authority, managing supply-chain packages, reviewing subcontractor submittals, and conducting rigorous Factory & Site Acceptance Testing (FAT/SAT).
Digital Engineering, BIM & PLM Transformation
Embedding modern digital practices into project delivery, including BIM strategy integration, PLM rollout (Siemens Teamcenter), and offline plant simulation rigs.
Owner's Engineer & Project Delivery Leadership
Program scheduling, multidisciplinary team supervision, cost/resource forecasting, and Management of Change (MoC) protocols for mega-projects.
Sectors We Serve
Nuclear & Defence
Urenco, BAE Systems, Sellafield, Dounreay
Submarine, air defense, and nuclear fuel cycle facilities. DefStan-compliant, shock/ingress/ATEX/EMC-qualified system delivery.
Chemical & Heavy Process
COMAH-regulated facilities
Major COMAH chemical facilities and continuous thermal process environments requiring rigorous functional safety and process hazard management.
Utilities & Energy Recovery
Water, wastewater, EfW/ERF plant
Water, wastewater, and Energy from Waste (EfW/ERF) plant automation, SCADA integration, and infrastructure upgrades.
Big Science & Emerging Tech
STFC, ITER, ESS, Fusion research
Fusion research (ITER, ESS) and advanced laboratory automation requiring precision instrumentation and complex control architectures.
Proven Track Record
Megaproject Technical Authority
Served as Intelligent Customer overseeing £15M+ control system contracts, redundant fiber networks, and site-wide SCADA integration on a major nuclear infrastructure programme.
Safety-Critical Defence Engineering
Led multidisciplinary engineering teams delivering shock, ingress, ATEX, and EMC-qualified systems for nuclear and submarine programmes under stringent defence standards.
OT Cyber Security Architecture
Designed and implemented site-wide cyber defense architectures including Tenable probes, unidirectional gateways, and threat scanning facilities for Critical National Infrastructure.
About GPCW Engineering Ltd
Gareth Powell
Founder & Principal Consultant
Founded by Gareth Powell, GPCW Engineering Ltd offers over two decades of high-level engineering leadership. We specialise in bridging the gap between complex regulatory mandates and practical, high-availability engineering execution.
Uncompromising Safety
Safety is non-negotiable. Every deliverable is assessed against the highest regulatory and functional safety standards.
Technical Transparency
Clear, evidence-based engineering rationale underpins every recommendation and design decision.
Regulatory Rigour
Deep fluency in IEC 61508/61511, ONR, HSE, and DefStan frameworks ensures compliant, defensible outcomes.
Digital Innovation
Embedding BIM, PLM, and simulation-led engineering to deliver smarter, more efficient project execution.
Request a Consultation
Discuss your project requirements with a chartered engineering specialist.