Areas We Cover Across London
Drain Unblocker London covers north, south, east and west London. Choose your area below for local advice, then request a quote online, since that is the quickest route.
- Local pages for London boroughs and neighbourhoods, north to south and east to west
- Blocked drain, drain unblocking and toilet unblocking across London
- CCTV drain surveys, drain jetting and no-dig pipe relining
- Victorian and Edwardian drainage experience across London's older housing
Get your London quote
Areas we cover across London
Choose your area to see local drainage information, because each page covers the services we offer there.
Services available in London
We offer a full range of drain services in London. They run from blocked sinks to CCTV surveys, while repairs fix broken pipes.
Drain Unblocking in London
High-Pressure Drain Jetting in London
CCTV Drain Surveys in London
Drain Repairs & Relining in London
Blocked Toilets in London
Emergency Drain Services in London
About London
London's drainage network is one of the most complex in the world. Sir Joseph Bazalgette built the Victorian intercepting sewer system in the 1860s, after the Great Stink of 1858. It still carries much of the capital's waste today. Because the pipes have worked for over a century, many drains now show their age. The Greater London Authority oversees strategic planning for the capital, while each borough manages its local roads.
Drainage in London
London's drains vary with age. Victorian clay pipes still serve many older streets. Edwardian and interwar homes often have cast iron or clay, while newer homes use plastic pipework.
London Clay lies under most of Greater London. It swells when wet and shrinks when dry. As a result, the ground moves, pipe joints open, and roots find a way in.
Several problems come up again and again. Street trees send roots into open joints, and cooking fat and wipes build into fatbergs. Shared drains between terraced homes can cause disputes. Responsibility with Thames Water is often unclear on older systems, while hard water leaves scale inside pipes.
For emergency drain unblocking anywhere in London, contact our team. You can also book a CCTV drain survey to see what is happening inside your pipes.
Blocked drains in London: what we usually find
Blocked drains are among the most common call-outs we attend in London. Kitchen sinks back up in Hackney terraces, and gullies overflow in Wandsworth gardens. Main drains block in Westminster mansion blocks, and grease clogs restaurant kitchens in Soho. Since property types and pipe ages vary a great deal, the right clearance method varies too. Our engineers carry drain rods, jetting gear, root cutters and a CCTV camera. We cover all 32 London boroughs, and we explain shared drain and Thames Water boundary issues where they apply.
- Roots from mature street trees entering open clay pipe joints
- Fat and grease build-up that forms fatbergs in homes and commercial kitchens
- Wet wipes and sanitary products that catch at bends
- Victorian clay joints that move with London Clay shrink and swell
- Shared drain blockages in terrace streets, especially conversion flats
- Lateral drain blockages near the boundary between private and Thames Water drains
- Gully blockages from leaves and silt in autumn and winter
- Grease blockages in busy restaurant districts such as Soho and Shoreditch
We begin by checking every accessible inspection point at your property. If the blockage is hard to find, we use a CCTV camera to locate it first. As a result, you do not pay for jetting or rodding on the wrong section of pipe. Jetting is our preferred method for clay pipes, because it clears the blockage and scours the walls. Where roots are the cause, we follow up with root-cutting nozzles and suggest lining rather than excavation. If the blockage sits on the boundary with Thames Water drains, we explain who is responsible and help you prepare the details they need.
Properties near mature street trees, such as the plane trees common in Hackney, Camden, Islington and Lambeth, benefit from regular CCTV checks. Roots are easier to deal with early, while they are still small. In older Victorian areas, such as Hammersmith, Westminster, Kensington and Wandsworth, lift the inspection chamber covers each spring. A quick look for silt build-up can prevent many summer drain failures.
Areas and landmarks we serve near London
Local features shape how drains behave in London. Trees, rivers and busy roads all play a part, while landmarks mark each area.
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The Thames
London's main waterway and the end point of the city's drainage system -
Bazalgette's Victoria Embankment
built in the 1860s to house a main sewer -
Crossness Pumping Station
a Victorian pumping station with a long role in London's sewage system -
The Lee Valley
a northern drainage corridor serving much of East London -
London Clay
the dense clay layer beneath most of Greater London
Helpful drainage articles
Drain Survey Without a Manhole: London Property Guide
Christmas Drain Care London: What Not to Pour Down the Sink
Where Does London's Waste Water Go? Thames Tideway 2026
London drainage FAQs
Why do drains block so often in London?
Age is the main reason. Much of the city's residential drainage runs through clay pipes that are over a century old, and their joints have worn. Roots then grow in through the gaps. London Clay also moves with the seasons, which damages the pipes further. Hard water adds scale, and dense housing puts heavy demand on every drain.
Who is responsible for shared drains between London terraced houses?
Since October 2011, Thames Water has been responsible for shared private sewers. These are drains that serve two or more properties. However, the drain inside your own boundary, your private lateral, remains your job. The boundary can be hard to see, so a CCTV survey helps. It shows which section is which, and you can share the footage with Thames Water.
How does London Clay affect my drains?
London Clay swells when wet and shrinks when dry. That cycle presses on buried pipes. Over time, joints open, pipes crack and sections shift. Open joints let roots and groundwater in, which speeds up the damage. Mature trees raise the risk, because their roots draw water from the clay and make it shrink more.
How quickly can you respond to a blocked drain in London?
Request a quote online and tell us it is urgent. Arrival times depend on your location in London, the time of day and traffic. We cannot promise a set time, but we will do our best to attend soon.
Do you cover all London boroughs?
Yes, we cover all 32 London boroughs plus the City of London. We work from Barnet in the north to Bromley in the south. We also reach Havering in the east and Hillingdon in the west. Wherever you are in Greater London, we can help with drain unblocking and other drainage work.
How much does drain unblocking cost in London?
The cost depends on how bad the blockage is and where it sits. It also depends on whether you need a standard daytime visit or an urgent one out of hours. Request a quote online, and we will confirm the price with you before any work starts.
While you plan the work, read our guide Lost Rivers Under Lambeth & Southwark: Drain Smells. It covers what to check before you ask for a quote.