W postcode locations
W Postcode Area: Damp, Mould & Leak Detection by District
14 districts from W1 to W14, with lettered sub-districts listed under their number. Pick your district to find the local page for your street.
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The W postcode area
The W postcode area is the Western and Paddington districts of the London post town, with W1 (Mayfair, Soho, Marylebone, Fitzrovia) split into lettered sub-districts and W2 to W14 covering Paddington, Bayswater, Notting Hill, Kensington, Hammersmith, Shepherd’s Bush, Chiswick, Acton, Ealing and Hanwell. It covers parts of Westminster, Kensington and Chelsea, Hammersmith and Fulham, Ealing, Hounslow and Camden. Most of the places listed below are in Westminster, Ealing and Hammersmith and Fulham.
Georgian and Victorian stucco terraces and mansion blocks in Mayfair, Marylebone, Bayswater and Notting Hill, nearly all now flats; Victorian and Edwardian terraces across Hammersmith, Shepherd’s Bush, Chiswick and Acton; inter-war semis in Ealing and Hanwell. Shared stacks, roof terraces, basements and lightwells make W a leak-tracing area above all.
Each district below links to the places inside it, with the borough page named on the row. Lettered sub-districts sit under their number.
How the W districts fall by council. In our directory Ealing has places in W3, W5, W7 and W13; Hammersmith and Fulham in W6, W10, W12 and W14; Kensington and Chelsea in W8, W10 to W11 and W14; Westminster in W1 to W2 and W9 to W10; Hounslow in W4, all of them in Greater London. The post town for every district is London.
Housing in Ealing, Hammersmith and Fulham and Kensington and Chelsea (Census 2021), the main council areas for W postcodes in our directory: 281,785 households: 39% owner-occupiers, 36% private renters, 23% social renters. Housing stock: purpose-built flats 44%, converted and other flats 21%, terraced 20%, semi-detached 12%, detached 3%.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.
Districts W1 to W14
W1: London
Sub-districts: W1B, W1C, W1D, W1F, W1G, W1H, W1J, W1K, W1S, W1T, W1U, W1W.
Council area: Westminster / Camden.
Also covered: Soho, Euston, Chinatown, Marylebone.
W2: London
Council area: Westminster / Kensington and Chelsea.
Also covered: Bayswater, Paddington, Little Venice.
W3: London
Council area: Ealing / Hounslow / Hammersmith and Fulham.
Also covered: Acton.
W4: London
Council area: Hounslow / Ealing / Hammersmith and Fulham.
Also covered: Grove Park, Acton, Gunnersbury, Acton Green, Bedford Park, Chiswick and 1 more.
W5: London
Council area: Ealing / Hounslow.
Covered from the council page above.
W6: London
Council area: Hammersmith and Fulham / Hounslow.
W7: London
Council area: Ealing.
Also covered: Hanwell.
W8: London
Council area: Kensington and Chelsea.
Also covered: Holland Park.
W9: London
Council area: Westminster / Brent / Camden.
Also covered: Maida Vale, Little Venice.
W10: London
Council area: Kensington and Chelsea / Westminster / Hammersmith and Fulham / Brent.
Also covered: North Kensington.
W11: London
Council area: Kensington and Chelsea / Westminster / Hammersmith and Fulham.
Also covered: North Kensington, Holland Park.
W12: London
Council area: Hammersmith and Fulham.
Also covered: Wormwood Scrubs, White City.
W13: London
Council area: Ealing.
Also covered: West Ealing.
W14: London
Council area: Kensington and Chelsea / Hammersmith and Fulham.
Also covered: Holland Park, West Kensington.
W1A is a non-geographic code used for business and PO-box mail, with no street addresses, so there is no local page.
Part of our London coverage. All postcode areas · All locations
Real investigations by our team
Examples from DML investigations across our service area. Our own photographs, not stock imagery.
What we do across the W postcode area
One team for the investigation, the report and the remedial work that follows. All services →
Leak detection
When the water is coming from somewhere nobody can see, our instruments find it and our report explains it.
Urgent leaks & burst pipes
Water through a light fitting or a pipe that has let go? Call and we prioritise the visit.
Damp & mould surveys
Independent damp diagnosis for owners, buyers and landlords, with no treatment sold on the back of it.
CCTV drainage surveys
When a wall is wet at the base and nothing inside explains it, the drain outside usually does; we put a camera in it.
Book a damp, mould or leak investigation in the W postcode area
Tell us what is happening and where; our team will call back, confirm the scope and book the visit. Live leaks come first.
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Request a call back in the W postcode area
Leave your details and a short description. One of our engineers will call you back; if water is coming in now, ring 0800 054 1524.
Frequently asked questions about the W postcode area
Can you work with my insurer for a property in the W postcode area?
We provide the trace-and-access evidence and the insurance-ready report; the claim itself is between you and your insurer. We will explain what the adjuster is likely to ask for.
What happens after the investigation in the W postcode area?
You receive the written report, usually with a separate quote for any remedial work. You decide what happens next; nothing is booked or started without your agreement.
Who actually attends in the W postcode area?
Our own engineers. The person who investigates writes the report, and the same team quotes and carries out or manages any repair.
Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.