Urgent repair
Call to discuss the fault
Wastewater overflowing, several fixtures backing up or your only toilet unusable? Call with the symptoms and postcode for drainage availability.
Call 020 4571 4235Mayfair · Blocked drains & drain unblocking
Blocked drains & drain unblocking in Kensington
Sink not draining, toilet backing up or an outside drain overflowing?
Tell us what needs doing. We’ll organise the right help and explain the price.
All London boroughs · Homes, landlords & managed properties · Your area: Kensington
- Direct enquiries
- Clear scope and price
- You approve extra work
- Small repair visits
- From £85 including VAT Call-out, assessment and first-visit labour for a small, straightforward fault where possible.
- Need help urgently?
- Call for availability Tell us your postcode, work required and access arrangements. Sending a form does not book attendance.
For safely accessible faults that can be resolved on the first visit. Parts, materials and further work are quoted separately for your approval. If a first-visit fix isn’t possible, the agreed visit charge still covers the call-out and assessment. We explain the fault and quote any parts, further investigation or larger repair for your approval.
Get the blockage investigated and the right clearance method agreed. Mayfair arranges drainage help across London for slow sinks, backed-up toilets, external drains and recurring blockages, with camera surveys and further repairs quoted when needed.
Start with what you can see
Find the right repair in Kensington
You do not need to know the technical name. Choose the description that fits, then see the repair options and what to include in your enquiry.
My toilet is blocked. Who should I call?
Choose toilet unblocking if water rises in the bowl or will not clear. Mention whether other drains are affected and if this is your only toilet; avoid repeated flushing when the level rises. A toilet that drains normally but keeps refilling needs a different plumbing repair.
Why do my sink and shower both drain slowly?
Several affected fittings may point to a blockage farther along a shared waste route, rather than two separate traps. Describe which fittings and neighbouring properties are affected. Responsibility for shared or public drainage should be checked before private work is commissioned.
A drain keeps blocking. Do I need a CCTV survey?
A camera survey may help explain a recurring problem after suitable access and any necessary clearance. It is a different scope from unblocking or repairing the pipe. Share previous clearance dates and reports so we can discuss the useful next step rather than repeat the same work.
The work, explained
How we can help
- Blocked sinks, baths, showers and toilets.
- External drain clearance and investigation of repeated blockages.
- CCTV inspection and drain jetting where suitable, priced to the actual scope.
A clearance, camera survey, jetting visit and structural repair are different scopes. We explain the proposed method and price; excavation, lining, specialist equipment and reinstatement are not automatically included in a small-repair visit.
Help us plan your visit
What to include in your enquiry
- Tell us whether one fixture or several are backing up, and whether neighbours are affected.
- Describe existing access to the affected pipework or outside inspection point; do not open unsafe covers.
- For flats or shared drainage, provide the building contact. Check whether the sewerage company is responsible before commissioning private work.
Choose the closest job
What do you need help with?
Kitchen or bathroom sink draining slowly?Sink unblockingScope, costs & enquiry →
Standing water in the shower tray or bath?Blocked bath & shower drainsScope, costs & enquiry →
Toilet backing up or failing to clear?Toilet unblockingScope, costs & enquiry →
Outside drain overflowing or wastewater pooling?Outside drain unblockingScope, costs & enquiry →
A blockage keeps returning—or you need to understand the drain’s condition?CCTV drain surveysScope, costs & enquiry →
A stubborn drain blockage needs specialist clearance?Drain jettingScope, costs & enquiry →Your visit price, explained
From £85 including VAT for call-out, assessment and labour to fix a small, safely accessible fault on the first visit where possible. We’ll give you the full visit price when you book. Parts and further work need a separate quote and your approval. If the repair needs more work, the visit charge still covers call-out and assessment.
The final price depends on the work, materials, access and time required. Share photos and the full brief so we can explain the visit and what is included before you book.
From enquiry to finished work
- Send the fault or task list and your postcode.
- Agree the scope, price and appointment with Mayfair.
- We arrange the appropriate trade and explain any extra work for your approval.
Workmanship cover, duration and exclusions are set out in the written quotation. Product warranties follow their manufacturer’s terms.
Direct to Mayfair · No chat required
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.
- Your details
- Review and send
- Request status
This is not an emergency response service. Do not wait for an online reply if there is an immediate risk to people or property.
How quotes and orders work →Help us plan your repair
Sink not draining, toilet backing up or an outside drain overflowing?
Tell us whether one fixture or several are backing up, and whether neighbours are affected.
London coverage
Blocked drains & drain unblocking in Kensington
Planning the repair at your Kensington property
For a Kensington repair around original joinery or decorative finishes, describe the part that has failed and the details to retain. A replacement specification needs more information than a photograph of the damage alone.
Drain access beside original paving or finishes
Identify existing access points from a safe position and the surfaces you want retained. A clearance and excavation are different jobs. If a structural defect is found, the repair method and reinstatement should be quoted before surfaces are disturbed.
A bath or shower waste with limited access
Describe the standing water and any leak during use. Existing panels can affect how the trap or waste is reached, while a restriction farther along the pipe may need different equipment. Opening-up and clearance should be priced distinctly.
Example work, explained
Investigating a drain that keeps blocking
- The problem
- A blockage returns after clearance, or several outlets drain slowly. Repeating the same clearance may leave an underlying defect unexplained.
- The work involved
- Establish the accessible drain route and who is responsible, then inspect the agreed runs with a camera where conditions allow. Any clearance needed first is a separate part of the scope.
- Checks and next steps
- Review the recorded findings, explain any visible obstruction or defect and set out the next step. A camera survey does not itself repair a damaged pipe.
Need similar work at your Kensington property? Tell us the symptoms and access arrangements.
Help us prepare the right visit
Provide whole-feature photographs, dimensions where safely obtainable, finish preferences and the building contact for shared parts. Include product labels for concealed fittings.
Does a drain survey include lifting and relaying paving?
Not automatically. The quote should identify access, the survey itself and any excavation or reinstatement separately.
Will the shower tray need to come out?
Not necessarily. The available access and blockage location are assessed first. Removal, replacement seals and surrounding finishes are not automatically included in a clearance.
Other places in the linked boroughs include Belgravia, Knightsbridge, Chelsea, Notting Hill, Kensington, South Kensington. These are service areas, not separate Mayfair offices.
Blocked drains & drain unblocking in Belgravia →Blocked drains & drain unblocking in Knightsbridge →Blocked drains & drain unblocking in Chelsea →Blocked drains & drain unblocking in Notting Hill →Blocked drains & drain unblocking in South Kensington →View Kensington and Chelsea services →
Finding the right address in Kensington
W8 is one useful reference around Kensington High Street. Kensington, South Kensington and North Kensington are not interchangeable postal areas, so include the complete property address.
All maintenance services in Kensington →
Postcode districts and borough boundaries
Local postcode examples: W8. These are examples of addresses associated with Kensington, not a complete or exclusive boundary.
Kensington and Chelsea: SW10, SW1W, SW1X, SW3, SW5, SW7, W10, W11, W14, W2, W8.
These are borough-wide postcode associations. A district can cross boroughs and include other neighbourhoods or addresses outside London. Even a full postcode shown in the finder gives district suggestions, not an address check. Give the street address and full postcode when booking.
Area and postcode references: Kensington and Chelsea: Kensington postal reference · Kensington and Chelsea: postcode district map. Neighbourhood names and conservation-area boundaries are different things; council requirements depend on the actual property.
Borough postcode reference: ONS Postcode Directory, August 2026. Active small-user postcodes allocated by ONS to London authorities; this is a browsing guide, not an appointment or address-validation service.
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Questions about blocked drains & drain unblocking
Is the blocked drain my responsibility?
It depends on where the blockage is and which properties the pipe serves. A public or shared sewer may be the sewerage company’s responsibility. Describe the affected properties and check the responsible company’s guidance before paying for private work.
How much does blocked drains & drain unblocking cost?
From £85 including VAT for call-out, assessment and labour to fix a small, safely accessible fault on the first visit where possible. We’ll give you the full visit price when you book. Parts and further work need a separate quote and your approval. If the repair needs more work, the visit charge still covers call-out and assessment.
Do you cover Kensington?
Yes. We cover Kensington, with coverage across its wider borough and all other London boroughs. Send your full postcode and work details to arrange the right attendance.