GEM 24/7
Electrical Inspection & Testing. GEM 24/7 has been vetted and approved by TrustATrader. Covering Camden City of London Hackney Hammersmith and Fulham Islington Kensington and Chelsea Lambeth Southwark Tower Hamlets Wandsworth and Westminster
Membership number TT32950
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Register GuaranteeAbout GEM 24/7, London
GEM 24/7 provides emergency electrical services and electrical installations across Central London, including Camden, City of London, Hackney, Hammersmith and Fulham , Islington, Kensington and Chelsea, Lambeth, Southwark, Tower Hamlets, Wandsworth, Westminster and nearby streets.
With 30 years of experience, we support homeowners and commercial customers with clear communication and dependable help when problems happen. We also carry out plumbing and drainage work to best practice standards, so you can have one trusted team managing the issue. We are Gas Safe Registered, members of NAPIT (Electrical Installer Certification Scheme, Electrical Inspector Scheme, NAPIT Third Party Certifier Scheme and Competent Person Scheme), CHAS, Constructionline, bsi Quality Management System ISO 9001:2015, bsi Environmental Management System ISO 14001:2015, the LRQA Gas Industry Registration Scheme and Environment Agency.
We carry out electrical work across Central London, and our services include:
- Full & Part Rewires
- New Builds
- Lighting
- Fuse Boards and Consumer Units
- Bathroom & Kitchen Extractors
- Electric Showers
- Additional Plug Sockets
- Test Certificates
- All Electrical Testing
- Fire Alarms
- Interior & Exterior Inspection & Reporting (EICR)
- Garage Electrics
- External Power
- Garden Sockets
- Security Systems
- Security Lighting
- Emergency Lighting
- Garden Lighting
- Emergency Call Outs
If you need emergency electrical repair, electrical testing, or an EICR in London, please use the contact details above to get in touch. Please mention TrustATrader when you get in touch. To find out more about GEM 24/7, visit our website
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GEM Environmental Building Services Limited t/a GEM 24/7
- Identification checked
- Company address verified
- Customer references checked
- Agreed to TrustATrader's high standards
- Agreed to complaints procedure
Insurance details
| Provider | Axa |
|---|---|
| Verified | 1st June 2026 |
Qualifications
- Gas Safe Registered
- NAPIT - Electrical Installer Certification Scheme
- NAPIT - Electrical Inspector Scheme
- NAPIT - Competent Person Scheme
- CHAS
- bsi - Quality Management System ISO 9001:2015
- bsi - Environmental Management System- ISO 14001:2015
- Constructionline - Bronze and Silver Member
- LRQA Gas Industry Registration Scheme
- Once For All Health & Safety
Reviews (5)
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Average rating: 5.0 out of 5
Review by Kate
on 29th May 2026
Kate - Image 1 "Had a leak coming from the loo, they came out quickly and problem resolved within 30mins. Very happy"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Thomas Edward
on 12th May 2026
Thomas Edward - Image 1 "I called GEM 24/7 as my shower was not draining and my boiler had stopped working. Leigh from GEM arrived and diagnosed the problem to be linked to an incorrectly installed shower macerator. New pump macerator was installed, which had waste pipes from shower and boiler connected to. New outflow piping was installed too. Leigh and his colleague explained everything they were doing, all through the job. Great service, good value for money , and most importantly working shower and boiler!!"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
-
Average rating: 5.0 out of 5
Review by Stephen Brown
on 11th May 2026
"Excellent through out - great service."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Nick
on 4th May 2026
"Repair work in bathroom.. excellent service"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
