Post your blocked drain job free and local plumbers contact you directly — jetting, rodding, CCTV surveys, and drain relining across all London postcodes.
Blocked sinks · Blocked toilets · Shared stack clearance · CCTV surveys · High-pressure jetting · Drain relining
High-pressure water jetting blasts through fat, grease, and compacted waste to fully clear drain lines — more thorough than rodding alone.
Mechanical rodding to break up and remove blockages in accessible drain runs. Effective for most household blockages.
A camera is passed through the drain to identify the exact location, cause, and extent of the blockage or damage.
Insert a resin liner into a cracked or root-damaged drain without excavation — restoring full flow and structural integrity.
Clear blockages in communal drainage stacks serving multiple flats — common in converted Victorian properties across London.
Clear outside gullies, inspection chambers, and underground drain runs that are blocked by debris, leaves, or root ingress.
| Job | Low estimate | High estimate |
|---|---|---|
| Drain unblock (sink / toilet) | £80 | £150 |
| Main drain unblock | £150 | £250 |
| High-pressure drain jetting | £100 | £300 |
| CCTV drain survey | £150 | £400 |
| Drain relining (per metre) | £500 | £2,000 |
| Shared stack clearance | £150 | £350 |
| External gully clearance | £80 | £200 |
| Emergency drain call-out (out of hours) | £150 | £300 |
Prices are estimates for London 2026. Actual costs depend on blockage location, severity, and access. Always get a fixed quote before work starts.
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Unblocking a drain in London typically costs £80–£250 depending on the severity and location of the blockage. A simple sink or toilet unblock is at the lower end. Blocked main drain lines, shared stacks, or deep external drainage will be higher. CCTV drain surveys cost £150–£400, high-pressure water jetting costs £100–£300, and drain relining starts from £500 for short sections. Always ask for a fixed quote before work starts.
For minor blockages — a slow-draining sink caused by hair and soap scum — a plunger, drain snake, or proprietary drain cleaner can work. However, chemical drain cleaners can damage older pipework and should be used sparingly. If more than one fixture is draining slowly, the blockage is in the main stack rather than an individual pipe, and DIY methods will not reach it. Sewage backing up, persistent or recurring blockages, or drains that have been slow for weeks all need a professional with rodding or jetting equipment.
The most common causes of blocked drains in London homes are fat and grease solidifying in kitchen pipes, hair and soap scum accumulating in bathroom waste pipes, baby wipes and sanitary products flushed down toilets (these do not break down), and root ingress from trees growing around old clay drainage pipes. In older converted properties, shared drainage stacks often block due to the sheer volume of waste from multiple households using pipework designed for one family.
A straightforward sink or toilet unblock takes 30–60 minutes. A blocked main drain line that requires high-pressure jetting typically takes 1–2 hours. If a CCTV survey is needed to diagnose a persistent or recurring blockage, allow 1–3 hours including the survey and report. Drain relining or excavation work for collapsed or severely damaged pipes is a larger job that may take a full day or more.
A CCTV drain survey is worth considering if you have recurring blockages that return within weeks of being cleared, slow drainage across multiple fixtures, you are buying a property and want to check the drains, or a plumber suspects root ingress or structural damage to the pipe. The survey costs £150–£400 but produces video evidence of the drain condition, which is essential for insurance claims and identifying whether repair or relining is needed.
Never pour cooking fat down the sink — pour it into a container and bin it once cooled. Fit hair catchers in showers and baths and clean them weekly. Only flush the 3 Ps — pee, poo, and paper. Run hot water down the kitchen sink for 30 seconds after washing up to keep grease moving through the pipe. In properties with old clay drains under the garden, have them inspected every few years to catch root ingress before it causes a full blockage.
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