Electrical Specialist in London and the South East
Household electrical work from a few extra sockets to a complete re-wire
From a small office to an office block we cover all commercial work with NICEIC certificates
Certificates for all industrial works carried out, from Installation and Emergency Safety Lighting

Welcome to GJ Day Electrical Limited - Specialist in electrical works for Residential, Commercial and Industrial projects

The GJ Day Electrical team is an experienced group of electrical engineers with a shared passion for high quality execution of cost efficient projects. The business has been established for over 25 years and we hold the key accreditations to undertake all scale of electrical work from one-off house rewires to complete industrial design, installation with building control on completion.

The work that we undertake is often pre-planned within a detailed consultant service project, however we do often meet with our clients to discuss ideas and manage the entire project to completion using our unique GJ DAY PROCESS. The projects that we cover include Residential properties, Commercial/Industrial projects within office and warehouse space, School installations and Testing/Fault Finding including condition reporting and visual inspections in new and listed buildings.

Our Full NICEIC Accreditation allows us to certify and register all electrical Installations with building control on completion. We are fully certified & Trustmark endorsed in accordance with the BS 7671 IEE wiring regulation (including approved document-part P). The GJ DAY Electrical team are electrical experts, trustworthy and reliable working in South-East London, Kent and the Home Counties. Please do not hesitate to contact us and discuss your electrical requirements on freephone 0800 774 7170.

Our qualified team ensure that your project is safe and meets legal electrical requirements


We hold full NICEIC Accreditation enabling us to certify Commercial and Domestic Installations this also incorporates UKAS accreditation. We can design, install and certificate providing full compliance with BS 7671 18th Edition.


We offer a selection of services for all types of domestic works ranging from minor electrical alterations to high-end residential refurbishment works.
Providing Part P certification on each project gives our clients peace of mind.


We offer a selection of services for industrial premises. We conduct all 3 Phase electrical work and issue completion certificates for all works carried out:- Minor Works, Electrical Installation and Emergency Safety Lighting.


All our Engineers are City and Guilds trained with our apprentices also attending day release college training. These IVQ qualifications give our specialist knowledge and skills in all areas with knowledge of technical design principles.

Electrical Specialists

We listen to our clients, interpret their ideas and provide first class technical, design and creative advice. We complete installations within predetermined timeframes, operate professionally and provide our clients with quality information throughout the installation.

"From the initial meeting, right through to the project finish, you were clear with the costs quoted, very trustworthy and reliable. We were very impressed with the work which was carried out in a very professional yet friendly manner. We would have no hesitation in recommending you to others and would certainly use you again."

Mr & Mrs Barden . Orpington, Kent

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