24/7 emergency & reactive maintenance · London
Emergency plumber in London
Burst pipe, water pouring through a ceiling or a leak you cannot stop?
Homes, businesses, landlords and managing agents. One number for the fault, the visit and the next repair step.
1-hour arrival aim, subject to availability. Give us your postcode and fault for the available visit time and charge. Call for an active emergency; the form does not dispatch help.
An active leak can spread beyond the room where you first notice it. Tell us where the water is appearing, whether it is still flowing and whether another flat or business is affected. Mayfair arranges urgent plumbing investigation and repair across London, day or night.
When to call
Problems we can help with
- Burst or leaking supply pipes
- Water leaking through a ceiling or into the flat below
- Overflowing cisterns and leaking toilet connections
- Stopcock faults preventing water isolation
Safety first
While you arrange help
Keep clear of water near sockets, lights or the consumer unit. If safe and familiar, turn off the internal water stop tap; never force a seized valve or enter an unsafe flooded area.
What the visit can include
- Locate the accessible source and assess whether safe isolation is possible.
- Repair a suitable accessible pipe, valve or connection, subject to condition and parts.
- Test the repaired section and explain any concealed work or drying needed.
A stain does not identify the leak source. Opening ceilings, specialist tracing, shared riser access and reinstatement may need a separate visit. A public supply failure belongs with the water supplier.
Detailed plumbing repair guides & local areasTell us these details when you call
- Is water still running, and can the affected supply be isolated?
- Which floor, rooms and neighbouring premises are affected?
- Who can give access to the flat above or shared water cupboard?
Add the full postcode, a safe contact number and who can arrange entry. Send photos only if you can take them safely.
Know the next step
Your emergency visit and price
Call for the charge for your fault and attendance time, including VAT and what the visit covers. Our small-repair offer starts from £85 including VAT for eligible accessible jobs; it is not a fixed price for every emergency. Parts, specialist equipment and further work are priced separately and need your approval.
We explain the expected arrival and charge when arranging your visit. If the problem needs a temporary make-safe measure first, we explain the permanent repair separately.
From the call to the repair
- Tell us the fault, postcode and any immediate risks.
- Agree the available attendance, access and price.
- The appropriate trade investigates and carries out suitable work, with extra work approved by you.
All 32 boroughs & the City of London
Emergency repair coverage across London
Call with your full postcode, whether you are in Mayfair, Marylebone, Kensington, Fulham, Camden, Islington, Stratford, Greenwich, Croydon or another London neighbourhood. The groups below help you find the existing local repair guides; postcode districts can cross borough boundaries and some postal areas extend beyond London.
Central London
Postcode areas include W1, WC1, WC2, EC1, EC2, EC3, EC4, SW1. Give the full address for attendance.
City of Westminster plumbing guide City of London plumbing guide Camden plumbing guide Kensington and Chelsea plumbing guideNorth London
Postcode areas include N, EN. Give the full address for attendance.
Barnet plumbing guide Enfield plumbing guide Haringey plumbing guide Islington plumbing guide Camden plumbing guideNorth West London
Postcode areas include NW, HA. Give the full address for attendance.
Brent plumbing guide Harrow plumbing guide Barnet plumbing guide Camden plumbing guideWest London
Postcode areas include W, UB, TW. Give the full address for attendance.
Kensington and Chelsea plumbing guide Hammersmith & Fulham plumbing guide Ealing plumbing guide Hounslow plumbing guide Hillingdon plumbing guideEast London
Postcode areas include E, IG, RM. Give the full address for attendance.
Hackney plumbing guide Tower Hamlets plumbing guide Newham plumbing guide Waltham Forest plumbing guide Redbridge plumbing guide Barking and Dagenham plumbing guide Havering plumbing guideSouth East London
Postcode areas include SE, BR, DA. Give the full address for attendance.
Southwark plumbing guide Lewisham plumbing guide Greenwich plumbing guide Bexley plumbing guide Bromley plumbing guideSouth West London
Postcode areas include SW, KT, SM, CR, TW. Give the full address for attendance.
Wandsworth plumbing guide Lambeth plumbing guide Merton plumbing guide Richmond upon Thames plumbing guide Kingston upon Thames plumbing guide Sutton plumbing guide Croydon plumbing guideFor a managed building, tell us who can provide access to shared supplies, plant rooms or neighbouring premises. A shared-system fault may need the building manager involved.
Reactive repairs for commercial properties
Report the affected equipment or area, impact on trading, access hours and the person authorised to approve work. We help offices, shops, hospitality premises and managed buildings arrange maintenance around their operational needs.
Commercial maintenance solutionsEmergency repair questions
Can I call Mayfair 24 hours a day?
Yes. Contact Mayfair 24/7 for emergency and reactive maintenance across London, including evenings, weekends and bank holidays. Describe the fault and give your full postcode so attendance can be arranged.
How quickly can someone arrive?
We aim for arrival within 1 hour where available. Timing depends on your postcode, the specialist required, current availability and travel conditions. Safe access and weather also affect roofing and other external work. We explain the expected attendance when you call.
How much does an emergency repair cost?
Call for the charge for your fault and attendance time, including VAT and what the visit covers. Our small-repair offer starts from £85 including VAT for eligible accessible jobs; it is not a fixed price for every emergency. Parts, specialist equipment and further work are priced separately and need your approval.
Can you stop a leak on the first visit?
A suitable accessible fault may be repaired during the first visit. If access, specialist parts or further investigation are required, the immediate aim is to limit the damage safely and explain the next repair step.
Can I send an emergency through the form?
Call for an active emergency. The form is useful for supporting details or a non-immediate repair, but it does not dispatch an engineer or book attendance.
Speak directly to Mayfair
Request your service quote.
Tell us what’s happening and where. We’ll help you work out the next step and what it costs.
No account needed. No payment to send an enquiry.
For an active emergency, call our 24/7 line on 020 4571 4235. This form does not dispatch an engineer. For immediate danger to people, call 999.
How your repair quote worksOther emergency repair services
Emergency electrical repairsPower gone, circuits repeatedly tripping or a damaged electrical fitting?24/7 contact · Scope & safety advice 
Boiler & heating breakdownsNo heating or hot water, a leaking boiler or pressure that keeps dropping?24/7 contact · Scope & safety advice 
Blocked drains & toiletsToilet overflowing, wastewater backing up or several drains blocked?24/7 contact · Scope & safety advice 
Roof leaks & storm damageRain coming in, damaged roof covering or a gutter overflowing into the building?24/7 contact · Scope & safety advice 
Doors, windows & make-safeDamaged door or window leaving your property exposed or unable to close?24/7 contact · Scope & safety advice Official safety and utility guidance
Cadent: gas emergencies · 105: power cuts · Thames Water: sewer flooding. Guidance reviewed 12 September 2026.