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Drain Unblocker London
Lewisham Hilly Fields and clock tower at night with underground drain pipe — blocked drain specialists in Lewisham

Blocked Drains Lewisham | New Cross, Deptford & Brockley

Drain clearance in Lewisham, including Deptford, Brockley and Sydenham. We know Ravensbourne flood risk and shared drains. Request a quote online, since it is the quickest way to start.

  • Lewisham postcodes SE4, SE8, SE13, SE23 covered
  • Ravensbourne flooding — check valve protection available
  • Victorian and 1930s semi drainage — shared drain expertise
  • Emergency drain unblocking and clearance
32 Boroughs covered
CCTV Drain surveys
Jetting High-pressure drain cleaning

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Services available in Lewisham

We offer a full range of drain services in Lewisham. They run from blocked sinks to CCTV surveys, while repairs fix broken pipes.

Drain Unblocking in Lewisham

Expert drain unblocking and drain clearance London-wide — sinks, toilets, baths, showers, and main lateral drains. We cover all 32 London boroughs.

High-Pressure Drain Jetting in Lewisham

High-pressure water jetting to clear stubborn blockages and provide sewer drain cleaning across London — residential laterals, commercial kitchens, and lateral drain runs to the public sewer.

CCTV Drain Surveys in Lewisham

CCTV drain surveys to diagnose faults precisely in London's aged Victorian drainage networks. HD reports provided.

Drain Repairs & Relining in Lewisham

Professional drain repair services including pipe repairs, relining, and replacement for London properties.

Blocked Toilets in Lewisham

Blocked toilet unblocking across London for domestic and commercial properties.

Emergency Drain Services in Lewisham

Emergency drain unblocking across London for blocked drains, sewage backup, external flooding, and other drainage emergencies.

About Lewisham

Lewisham is in south-east London. It runs from New Cross in the north to Catford and Sydenham in the south. Homes include many old terraces, 1930s semis and post-war estates. Because the Ravensbourne river system runs through it, drainage differs between neighbourhoods. Lewisham Council manages highway drainage, so report blocked road gullies and road flooding to them.

Private drains inside your boundary are your responsibility, and that is where we help. We also serve neighbouring Greenwich to the east. The border crosses the Ravensbourne corridor, so the two areas share many drain issues.

Property types: Victorian terraced housing across New Cross, Deptford, and Lewisham town; Edwardian semi-detached properties in Catford and Forest Hill; 1930s semi-detached houses in Sydenham and Bellingham; modern developments around Lewisham station.

Drainage in Lewisham

Deptford, New Cross and Lewisham town have Victorian clay drains. Much of the rest of the borough has Edwardian clay, while Catford and Sydenham have 1930s clay.

London Clay lies under most of the borough, with river deposits along the Ravensbourne valley. The floodplain raises groundwater in low-lying areas. As a result, drains in these areas work harder after heavy rain.

Roots from trees at Hilly Fields and Mountsfield Park enter drains nearby. A CCTV drain survey finds them, while high-pressure jetting clears them. In heavy rain, the sewers in the Ravensbourne catchment can fill up.

A check valve on your drain lateral can stop sewer water flowing back in. Clay joints in 1930s drains can shift with the ground. Shared drains also matter in the Victorian terraces of New Cross, Deptford and Catford.

For the Catford end of the borough, see our page on blocked drains in Catford. Our emergency drain team covers Lewisham, since problems can arise at any time.

Areas and landmarks we serve near Lewisham

Local features shape how drains behave in Lewisham. Trees, rivers and busy roads all play a part, while landmarks mark each area.

  • Hilly Fields

    high parkland whose mature trees can affect nearby drains

  • River Ravensbourne

    runs through Catford and Lewisham, with flood risk to consider

  • Deptford Creek

    a tidal tributary of the Thames

  • Mountsfield Park

    mature parkland in Catford

  • Crystal Palace Park

    on the Bromley boundary, with mature trees near Sydenham drains

Areas in this borough

Nearby areas we cover

drainage in CatfordGreenwich drainageblocked drains Canary WharfBeckenham drain engineersdrain unblocking Tower Hamlets All London boroughs we cover

Helpful drainage articles

Drain Jetting

Greenwich, Lewisham & Bromley Hill Streets: Why Drains Block

Greenwich, Lewisham, and Bromley sit on London's hilliest terrain. The combination of steep gradients, older drainage infrastructure, and heavy autumn leaf-fall creates a predictable drain blockage cycle that residents in these boroughs face every year.
 Drain Advice

Blocked Drains in Lewisham, Deptford, and New Cross: SE London Drainage Problems

Lewisham's topography makes drain blockages here different from flat inner-London boroughs. Steep gradients, Victorian terraces, and the Ravensbourne catchment create drainage problems that catch homeowners off-guard.
 CCTV Surveys

Drain Survey Without a Manhole: London Property Guide

Many London properties have no visible manhole. A CCTV drain survey is still possible using rodding eyes, downpipes, and push-rod access. Here's how it works.

Sources

Lewisham drainage FAQs

My Catford 1930s semi has a drain that backs up in heavy rain — what's causing it?

Backup in heavy rain in Catford often relates to the Ravensbourne catchment. While the public sewers fill up in extreme rain, water can back up into private drains connected to the same system. Much of Lewisham has a combined sewer system. If the problem keeps returning, a check valve on your drain lateral can stop sewer water entering your property.

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.

What causes blocked drains in London?

Grease and fat build-up is a common cause, and so are roots from London's many mature trees. Cracked or collapsed Victorian clay pipes also cause trouble. Flushed wet wipes and cotton products block pipes too, while ground movement in London Clay can shift joints. Old London drains suffer most from roots and displaced joints.

Will you need to dig up my garden or driveway?

Usually not. Most blockages clear with drain rods or high-pressure jetting, and neither needs digging. Where a drain needs repair, we use no-dig pipe relining wherever we can. We only suggest digging when no-dig methods will not work.

While you plan the work, read our guide Catford, the Ravensbourne and the Pool: Surface Water and Drain Backup in SE6. It covers what to check before you ask for a quote.

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