Electrical & Data Installations in London

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At Bigness Group, we deliver reliable electrical and data installation services across London — combining technical expertise, safety compliance, and precision engineering.
Whether you need full rewiring, energy-efficient lighting systems, or structured cabling for data networks, our certified electricians ensure every installation meets the latest British Standards (BS 7671) and project-specific performance requirements.

From new builds to refurbishments and commercial fit-outs, our solutions are designed for safety, scalability, and long-term reliability.

Our Electrical & Data Installation Services in London

• Electrical System Design & Installation – Full wiring, distribution boards, sockets, and power management for residential and commercial properties.

• Lighting Solutions – Energy-efficient LED systems, emergency lighting, and intelligent lighting controls for workplaces and modern homes.

• Data & Network Cabling – CAT 6/CAT 7 structured cabling, server rack terminations, and Wi-Fi infrastructure setup.

• Testing & Certification – Electrical Installation Condition Reports (EICR), PAT testing, and safety inspections for compliance and insurance.

• Maintenance & Upgrades – Periodic testing, rewiring, and system upgrades to support evolving power and data needs.

Our Process

1. Consultation & Planning – Define your electrical and data requirements, usage patterns, and site constraints.

2. Site Assessment & Design – We inspect and design systems that comply with IET Wiring Regulations and building codes.

3. Installation & Integration – Certified electricians and data engineers deliver seamless installations with minimal disruption.

4. Testing & Handover – Full certification, performance testing, and documentation for peace of mind.

Powering Spaces with Smart, Safe, and Sustainable Systems

Every modern property depends on efficient power and data connectivity. At Bigness Group, we combine traditional craftsmanship with advanced electrical engineering to create systems that are safe, scalable, and future-ready.
Whether you’re upgrading your home’s lighting, fitting out a new office, or integrating smart controls across multiple floors, we deliver installations that enhance performance, comfort, and energy efficiency.

Our electricians are trained to handle everything from basic socket layouts to full-scale automation systems, including smart lighting, motion sensors, and energy-saving LED conversions. Each project follows strict safety protocols and is fully compliant with BS 7671 Wiring Regulations, Part P Building Regulations, and NICEIC standards.

Smart Connectivity for the Digital Age

With today’s growing reliance on digital infrastructure, poor network cabling can slow down entire operations. Our data engineers design and install CAT 6/CAT 7 structured cabling, server racks, and fibre backbones that ensure reliable, high-speed communication between devices and systems.
We also integrate wireless access points, VoIP, security systems, and CCTV wiring, allowing your property to stay connected and secure at all times.

Residential Electrical Services

From extensions and loft conversions to complete rewires, Bigness ensures your home’s electrical installation is both safe and efficient.
We modernise outdated systems, install smart thermostats, and provide energy-saving lighting upgrades — all designed to reduce your bills and increase your property’s long-term value.

Commercial & Industrial Solutions

For offices, retail units, and industrial environments, we deliver tailored electrical and data networks that meet demanding power loads and health-and-safety obligations.
Our commercial clients benefit from scheduled testing, emergency lighting maintenance, and fast response for reactive repairs — minimising downtime and ensuring business continuity.

Safety, Certification & Compliance

Every project concludes with full Electrical Installation Certificates (EIC) or EICR Reports, confirming your system meets all legal and insurance requirements.
Our engineers carry out periodic inspections, PAT testing, and fault-finding diagnostics, ensuring your installation remains safe long after handover.

Sustainability & Energy Efficiency

We believe efficient systems are the foundation of sustainable buildings. Through LED upgrades, low-voltage circuits, and smart energy management, we help clients reduce their carbon footprint while improving light quality and comfort.
Bigness is also experienced in integrating renewable energy connections — such as solar PV inverters, EV charger points, and battery storage systems — within both residential and commercial projects.

Our Latest Electrical Projects in London

Explore our recent case studies to see how we’ve delivered compliant, high-performance electrical and data systems for homes, offices, and public-sector facilities across London.