Onsite Electrical Services

We are an NICEIC Approved Contractor

17 Cowper Gardens, Wallington, Surrey, SM6 9RN Directions

   Open 24 Hours

Why Choose Us?

Fast Response
Affordable Prices
Many Years Experience

Business overview

Onsite Electrical Services, Electricians & Electrical Contractors, 24 Hour Emergency Service, N.I.C.E.I.C. Approved Contractor, Domestic Installers, Members of TrustMark Scheme.


Onsite Electrical Services offer a friendly and efficient service. We have a long experience within the electrical contracting industry having been established for over 50 years.

We pride ourselves on our reputation for delivering a standard of workmanship that is required by the Institute of Electrical Engineers. The I.E.E. publish the 17th addition of the wiring regulations and are now recognised as a 'British Standard' (B.S.7671).

We are also "Approved Contractors" with the N.I.C.E.I.C. Their remit is to ensure that all of their enrolled members work to the standards required within the I.E.E. wiring regulations (B.S.7671).

We also qualify for the "Trust Mark" status scheme, giving added assurance to our customers that we are backed by an organisation that provides peace of mind when choosing a company.

In case of emergency, our Certified N.I.C.E.I.C. Electricians can be on the job in as little as one hour. Our 24/7 service is available day and night.


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Products & Services

24 Hour Emergency Service

Fault Finding & Repairs

Security Systems

NICEIC Approved Contractor

Consumer Units/Fuse Boards

Immersion Heaters

Awarded TrustMark Status


Cooker Installations

Domestic & Commercial

Wall Sockets

Shower Installations

Established 45+ Years

Outdoor Wiring

Landlord Certificates

100% Guarenteed Service

Complete Rewires

Periodic Inspections



  • TrustMark (029792)


  • NICEIC (029792)


  • Approving Electrical Installation Work in Dwellings in Compliance with Building Regulations, Level 3 Award (City and Guilds of London Institute)



Very unhappy with Ray/Jay

Cost a bomb. Didn't do much and told him to leave as I couldn't trust him anymore

Do yourself a favour, and not let this man into your home
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Excellent professional skills

We have engaged Onsite Electrical Services several times now for handling various electrical maintenance issues and improvements for the property management company I run for an apartment block. This contractor is undoubtedly one of the best we have encountered over the last 12 years and has combined excellent professional skills with a very good, courteous and helpful approach towards us as a client. Some of the tasks have been difficult to handle and have required 'going the extra mile' to get the job done. It has been a real pleasure every time we have used them.
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Efficient & professional

Very efficient and very professional service. Managed to complete a huge job with no disruption to our services.
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Highly Recommended

Ray provided a very knowledgeable and professional service keeping me informed at all times and taking time to explain procedures I asked about. I would happily recommend Onsite Electrical Services to any other business or private household who needed electrical services. Thank you Ray!
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£90 call out fee + £80/h + VAT!!

£234 to change a smoke alarm in 20min. Managed to get £11 refund to start with as a "gesture of good will" (?) eventually followed by another £66.

Make sure you do ask for their rates as they are nowhere to be seen on the website!
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