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Electrical Contracting

GCL is a well-established business of more than 23 years with a proven track record of delivering sustainable and advanced electrical services that harness new and innovative technology. When considering appointing an electrical contractor, it is essential to work with a certified, reputable company that believes training, education and safety are of the utmost importance. 

GCL is a member of the Electrical Contractors Association (ECA) and is proud to have been on the ECA roll of Approved Contractors since the company’s establishment. To maintain this accreditation, GCL is audited every year and complies with all relevant technical and safety standards. Additionally, GCL has a Safe Contractor approval which demonstrates we take our commitments to health and safety seriously. 

From new builds to modernisations and renovations, GCL works closely with you to ensure the integration of all your electrical requirements is seamless. This includes: 

-    Building Energy Management Systems (BEMS) 
-    Mains and distributed electrical services 
-    Low voltage wiring systems 
-    Energy-efficient LED lighting
-    Modular wiring 
-    Energy storage and electrical charging points for vehicles 
-    Smart building systems
-    Fire and security systems 
-    High-performance wireless services
-    Cat 5E through to Cat 8 network cabling 


Electrical Contractors Association (ECA) Benefits 

As an approved ECA Contractor, GCL holds the additional benefits of covering bond and warranty, for added protection and peace of mind for our customers.

  • ECA Bond – This indemnifies you against the additional costs of an alternative contractor having to complete a Member’s work, in the event of a Member becoming insolvent before completion. 
  • ECA Warranty – This protects you if the electrical installation work fails to comply with the relevant standards. It will be rectified without additional cost to you, subject to ECA terms and conditions.  

The ECA recognises that the renewable sector uses different technologies to traditional electrical installations and has created a specific warranty scheme in partnership with the Microgeneration Certification Scheme (MCS). This offers additional protection if you’re investing in green systems or services. 

GCL will provide an ECA Warranty Certificate when the project has been completed. 

Microgeneration Certification Scheme (MCS)

The MCS certifies low-carbon products and installations used to produce electricity and heat from renewable sources. From wind turbines to solar panels, biomass boilers to heat pumps, there are many different options to suit a variety of needs.

MCS is a standards organisation that creates and maintains standards, enabling the certification of products, installers and their installations.

There is an approved warranty scheme available from all ECA/MCS registered installers for renewable technologies; GCL is an active participant in this scheme.

The ECA/MCS Warranty covers:

  • Workmanship to the required standards
  • Deposit payment protection

Key features of the ECA/MCS Warranty:

Installations must meet the requirements of the Renewable Energy Consumer Code.

Renewable technologies currently covered by this product warranty include:

-    Air source heat pumps
-    Biomass
-    Biomass heating
-    Combined heat and power (CHP)
-    Fuel cells
-    Ground-source heat pumps
-    Hydropower
-    Solar photovoltaics
-    Solar water heating
-    Wind power

The cost of an electrical system is not just a matter of the price paid to install it; many other factors need to be considered, including environmental issues. Total life cost is also an essential factor, especially with the increasing complexity of today’s systems incorporating features such as emergency lighting, fire alarms, CCTV, data and telecoms networks, lightning protection and battery backups.

With most buildings and their systems heavily reliant on a reliable supply of electricity, the cost of electrical system failure is considerable. This is why considering the right electrical contractors is integral.

Our team at GCL Building Technologies are knowledgeable, highly trained engineers, each with exemplary network cabling and electrical engineering expertise, combined with many valuable years of experience in providing building system services.

Our services are delivered reliably, on time and within budget, by a company that cares.

No matter the size of your project, GCL will be there to assist you with a professional and polite service. 

Read about what our customers say about us.

Talk to us about your requirements today
Call our office on 020 3906 6070 or email us at

Talk to us about your requirements today

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Talk to us about your requirements today

Call our office on 020 3906 6070 or alternatively email us at

Contact Us