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Gas Safe Registered · London-wide

London's Most Trusted
Plumbing Service

We are dedicated to providing exceptional plumbing through a responsive, customer-first approach — from late-night emergencies to quiet annual servicing.

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Plumber fixing pipe on the job · islington
Engineer team cortex engineers · daily call-outs
Boiler installation boiler install · hackney
Trusted across London
Gas Safe Registered CIPHE Member 4.9 ★ on Trustpilot 24/7 Response

Excellence in every job, every time.

Discover plumbing services built around quality workmanship, experienced engineers, and customer satisfaction.

Emergency Call-Out

Burst pipes, leaks and no-heat situations covered around the clock, with a Gas Safe engineer on your doorstep — fast.

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Boiler Repair & Installation

Servicing, repairs and new installs from Worcester, Vaillant, Ideal and more — backed by manufacturer warranties.

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Cortex emergency call-out van

Diagnostics & Inspection

Thermal cameras and acoustic leak detection pinpoint problems precisely — no needless walls torn open.

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Preventive Maintenance

Annual servicing plans that catch issues early, extend system life and keep your home insurance valid.

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Why Choose Us?

Your pipes, our priority — here's what sets us apart.

Let's talk about what we stand for

We believe great plumbing is about more than fixing leaks. It's about clear quotes before the spanner comes out, qualified engineers on every job, and a tidy kitchen when we leave. That's the standard every Cortex visit is built around.

Fast Response Times
Upfront Transparent Pricing
Qualified Gas Safe Engineers
Community Trusted
Emergency Cover 24/7
Data & Privacy Protected
Cortex engineer with customer

Recent work across London

A few jobs from the last few weeks — every visit photographed before and after.

Full bathroom refit Bathroom

Full bathroom refit

Wimbledon, SW19
Acoustic leak detection Diagnostics

Acoustic leak detection

Clapham, SW4
On-van kit and calibration Behind the scenes

On-van kit & calibration

Hackney, E8
Cortex Plumbing

Get in Touch with Us

Cortex Plumbing: pioneering London's plumbing solutions to improve homes and customer outcomes — from same-day repairs to long-term system upgrades.

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Engineer on commercial site visit

Ready to Begin Your Cortex Plumbing Journey

Cortex plumber on a London call-out