Commercial + residential
Central London emergency electricians, plumbers & heating engineers
Burst pipe, boiler breakdown, fuse board tripped, blocked drain, no heating, no hot water – whatever’s gone wrong, a real person answers 24 hours a day. We cover Chelsea, Kensington, Mayfair, Westminster, the City of London, Camden, Islington, Hackney and Southwark and the streets in between. Backed by 25 years of GEM Environmental Building Services.
Can't call? Continue to our booking form — your service and postcode will be carried over automatically.
Complete booking form →Gas Safety Certificate (CP12)
£99+ VATElectrical Condition Report (EICR)
£200+ VATPAT Testing
EnquireAnnual Boiler Service
£99+ VATSomething gone wrong? Burst pipe, boiler breakdown, fuse board tripped – we’re already on our way.
our Services
Three trades. One accredited team.
18-month workmanship guarantee. Because we stand behind every job we do.
Where we work
Coverage area
We cover 37 areas across central and inner London – from Mayfair and Chelsea in the west to Hackney and Whitechapel in the east; from Hampstead and Camden in the north to Brixton and Bermondsey in the south.
Not sure if we cover your street? Use our postcode checker or call us on 0208 985 0409 – we’ll confirm in 30 seconds.
Why GEM 24/7
The standard others promise. We deliver.
No call-out fee. A real person answers at 3am. Whether it’s a burst pipe at midnight or a fuse board that’s tripped on a Sunday afternoon – we say what we do, then we do it, with a full written invoice every time showing start time, finish time, labour and materials.
“One Team. One Call. We’re There.”
Always a real person
In-house team weekdays, specialist answering service evenings and weekends. Never automated, never a queue.
No surprises
Hourly + VAT. One-hour minimum, 15-minute increments. No call-out fee. No out-of-hours premium. Full invoice every job.
Uniquely accredited
NICEIC and NAPIT — dual government-approved electrical accreditation. Gas Safe. CHAS. ISO 9001, 45001 and 14001.
See accreditations →Full transparency
Engineer name, photo and vehicle registration sent before arrival. DBS checked. Uniformed. Property left clean.
Where we work
Commercial & residential properties in central London
We work wherever London works. Residential properties, commercial premises, managed estates and everything in between, our Gas Safe, NICEIC and NAPIT accredited engineers are available 24 hours a day across central London.
Residential
Homes, flats and rental properties across central London
- Homeowners
- Private landlords
- Letting agents & property managers
- HMO landlords
- Block managers
- Housing associations
Commercial
Businesses, premises and managed estates across central London
- Restaurants & cafés
- Hotels & hospitality
- Offices & co-working spaces
- Retail & high street
- Schools & education
- Healthcare premises
Same accreditations, same transparent pricing, same 24/7 response for every client, every property type, every callout.
GEM EBS — since 1999
30+ years serving London
GEM 24/7 is the emergency callout division of GEM Environmental Building Services. Our heating engineers, electricians and plumbers are the same team that has maintained over 200 communal boiler houses across London since 1999 – the same accreditations, the same standards, available 24 hours a day.
For landlords & letting agents
Your compliance, sorted.
Gas Safety Certificates, EICRs, PAT testing – the legal requirements that protect your tenants and protect you from serious fines. One accredited team handles all compliance across central London – from Chelsea and Mayfair to Islington, Hackney and Southwark.
Gas Safety Certificate (CP12)
£99+ VAT AnnualAnnual Boiler Service
£99+ VAT AnnualElectrical Condition Report (EICR)
£200+ VAT 5-YearlyPAT Testing
Annual
How it works
Four steps from call to resolved
Call - we answer
A real person answers 24 hours a day. A burst pipe in EC1, a boiler breakdown in SW1 or a tripped fuse board in WC2 – describe the problem, give your postcode. We confirm who’s coming and when.
Engineer details sent
Name, photo and vehicle registration sent before arrival. DBS checked. Uniformed. Liveried vehicle.
Dispatch within the hour
Target response time: 90 minutes across all 37 covered areas in central and inner London.
Job done. Invoice issued.
Full written invoice: start time, finish time, work carried out, labour and materials. All major cards accepted.
Client reviews
What our clients say
Boiler breakdown at 2am on a Saturday. Called GEM 24/7, a real person answered immediately. Engineer arrived in under an hour. Sorted by 3:30am. Outstanding.
I manage 12 properties across Zones 1 and 2. GEM 24/7 handles all our gas certs and EICRs. Always correct, always on time. Exactly what a letting agent needs.
Power failure in the kitchen on a Friday evening. GEM 24/7 had an electrician with us within the hour. Sorted before service started. The invoice was clear and we were back online before we lost a cover.
Need a callout or a quote?
Select your service and postcode. We’ll get back to you within 15 minutes during business hours. For emergencies, call us directly on 0208 985 0409 – we answer 24/7.