London's Trusted Plumbing,
Heating & Electrical
Specialists
Gas Safe registered engineers delivering fast, reliable repairs and installations across London. £5M public liability insured.
Gas Safe Registered
Fully certified engineers
CHAS Accredited
Health & safety verified
£5M Insured
Public liability cover
24/7 Available
Emergency response
What We Do
Complete Property Services Under One Roof
From emergency repairs to planned installations, our registered engineers handle every trade — so you only need one call.
Gas & Heating
Boiler installations, repairs, servicing, and central heating systems by Gas Safe engineers.
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Electrical
Full electrical installations, fault-finding, rewiring and emergency repairs.
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Plumbing
From leaking taps to full bathroom installations — fast, reliable plumbing services.
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Drainage
Drain unblocking, CCTV surveys and drainage repairs to keep your property flowing.
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Boiler Services
Annual servicing, CP12 certificates and landlord gas safety inspections.
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Emergency Plumbing
24/7 rapid response for burst pipes, leaks and plumbing emergencies across London.
Learn MoreWhy MAMOSS
The Reliable Partner Property
Owners Trust Most
We don't just fix problems — we prevent them. MAMOSS delivers proactive, professional service that protects your property and your investment.
15+
Years Experience
2,000+
Jobs Completed
24/7
Emergency Cover
Rapid Response, Every Time
Our engineers are dispatched within the hour for emergencies. No waiting around — we value your time as much as our own.
One Call, Every Trade
Plumbing, heating, electrical, drainage — all under one roof. No coordinating multiple contractors.
Certified & Fully Insured
Gas Safe registered, CHAS accredited, Safe Contractor approved. £5M public liability insurance for your peace of mind.
Transparent, Fixed Pricing
No hidden charges. We quote before we start, so you know exactly what you're paying. No surprises.
Trusted by Property Managers
We serve letting agents, property management companies, private schools and landlords across London — year after year.
Building Regulation Compliant
All work completed to national standards and relevant building regulations. Fully documented and certified.
Client Reviews
Trusted by Homeowners & Property Managers
Transparent Pricing
Honest Rates, No Hidden Fees
Clear, upfront call-out rates so you know exactly what to expect. Weekday, evening, night and weekend pricing available.
Plumbing
£100
from / hr
Heating & Gas
£120
from / hr
Electrical
£120
from / hr
Drains
£140
from / hr
Building
£100
from / hr
Boiler Service
£120
from / hr
Areas We Cover
Serving Homes & Businesses Across London
Based in Bethnal Green, our engineers cover all major London boroughs — with rapid response times you can count on.
View All LocationsCurrent Offers
Exclusive Offers for London Properties
Complimentary Boiler Health Check
Book any heating service and receive a full boiler diagnostic at no extra cost. Identify potential issues before they become expensive emergencies.
Claim This OfferLandlord Annual Package
Combine your CP12 gas safety certificate, boiler service and electrical inspection into one visit — saving you time and coordination costs.
Get Package DetailsPriority Emergency Membership
Join our priority response list for guaranteed same-day attendance on emergencies. Ideal for property managers and portfolio landlords.
Learn MoreNeed a Reliable Engineer?
Get Your Free Estimate Today
Whether it's an emergency or a planned installation, our team is ready to help. No obligation, no hidden fees.