FS Group engineer crouched beside an open manhole on an industrial estate

Areas we cover in London and the South East

FS Group engineers work across London, Essex, Kent and Hertfordshire. Pick your area below, or type your town or postcode.

Trusted by homeowners, landlords and businesses across London and the South East

Why FS Group

Two bases and one help desk

Our engineers set out from two bases, one in Walthamstow and one in Waltham Abbey. From there they reach every London area below, plus the towns of Essex, Kent and Hertfordshire. Each area page lists the streets and postcodes we visit, with reviews from people nearby.

Help desk open 24/7Rate agreed on the phoneWritten CCTV reportsFixed-price quotes6-month guarantee, T&Cs applyFamily-run since 1998
Cheap drain unblockingFrom £55.00 + VAT

Weekdays from 8am to 6pm, a standard unblock is charged per half hour. Ring first and you learn the rate before an engineer leaves.

See all our rates

What customers say across our areas

4.9
★★★★★
Google rating
★★★★★

Had a booking issue initially, but when called in the morning, engineer promptly came, and sorted the issue (blocked drain) very efficiently and thoroughly. He also walked us through the issue and pricing and made sure we understood the choices before proceeding. Would not hesitate to use again. 5*

J
Jose
Drain unblocking · Islington · Reviews.co.uk
★★★★★

Excellent service from FS Drainage I had a blocked outside pipe & Jordan had it cleared in a short time no fuss or drama just got on with the job he explained why I had the problem & what to watch out for to prevent from happening again very happy with the service. Carol - Harlow

C
Carol
Outside drain · Harlow · Reviews.co.uk
★★★★★

We were extremely impressed with the service provided by FS Drainage Services. They came out the same day at a reasonable, set price and the plumber was very quick, friendly and efficient. I would highly recommend them.

S
Sarah
Engineer visit · Shooters Hill · Reviews.co.uk
★★★★★

Speedy and effective service plus good advice from a friendly engineer for the agreed fee. What more can you ask?

J
Joy Middleton
Engineer visit · Gillingham · Reviews.co.uk
★★★★★

He arrived on time, cleared the drains and was very friendly and informative. He then cleaned up after himself and disinfected the floors with Zoflora. The charge was very fair and in accordance with the quote. I will definitely use them again and highly recommend them.

C
Costas C.
Drain unblocking · Maida Vale · Reviews.co.uk
★★★★★

A small but complex blockage was expertly cleared by Josh. Much appreciated and will most definitely use again. Thank you Josh.

J
Joe Cavozzi
Blockage cleared · Reviews.co.uk

Where we work

Pick your area

Each button opens the page for that area.

Who we work for

Homes, landlords and businesses

Owners and renters

Whether it is a London terrace or a semi in Kent, the engineer explains the fault before fixing it.

Landlords and agents

Blocks of flats often share one soil stack. Survey jobs end with the footage and a written report for your files.

About CCTV surveys

Restaurants, shops and offices

Commercial kitchens can book drain work out of hours. Priority Account holders get quicker attendance and contract rates.

About Priority Accounts

Priority Accounts for landlords and businesses

If you look after several properties across our areas, a Priority Account puts your jobs ahead of our regular bookings.
One account manager handles every site. Regular work is billed at trade rates, with 30 days to pay each invoice.
Opening an account is free. You pay only for the jobs we carry out.
FS Group vans and engineers at a commercial site

Drainage services in every area we cover

One call books any of these, wherever you are. Tell the help desk what is happening and they send the right engineer.

How it works

What happens after you ring

1

Call the help desk

Ring 0800 689 3497 day or night, or leave your details for a call back within 15 minutes.

2

Hear the rate

You learn the half-hour rate before an engineer sets off, wherever you are.

3

Fixed and guaranteed

The engineer clears or repairs the drain. Our workmanship then carries a six-month guarantee, T&Cs apply.

CHAS accredited contractorSafeContractor approvedWater Jetting Association member 2026Constructionline registered

Questions about the areas we cover

Which areas do you cover?
We cover London, Essex, Kent and Hertfordshire. Each area page lists the towns and postcodes our engineers visit.
My town is not listed. Can you still come?
Often, yes. Phone 0800 689 3497 with your postcode and the help desk confirms the visit before booking it.
Where are your engineers based?
Our London base is in Walthamstow, E17, and our Essex base is in Waltham Abbey. Both are on the maps above.
Do you work at night and at weekends?
Yes. The help desk is open 24 hours a day, 365 days a year. Engineers stay on call through the night.
How much does it cost to clear a blocked drain?
A standard unblock is charged from £55.00 + VAT per half hour, weekdays 8am to 6pm. Most toilets and sinks are cleared in that time. Jetting and out-of-hours work have their own rates, and the help desk gives you the rate first.
Do you do plumbing as well as drainage?
Yes. Our plumbers handle leaks, bathrooms, kitchens, outdoor taps and appliance installs. Essex, Kent and Hertfordshire each have their own plumber page.
How soon can an engineer get to me?
That depends on where the nearest free van is, and the help desk tells you honestly when you call. Emergencies such as sewage backing up are sent first. A slow sink that can wait is booked at a time that suits you.
Is your work guaranteed?
Yes. Our workmanship carries a six-month guarantee, T&Cs apply. It covers repairs, relining and unblocking. If the same fault returns in that time, ring and we come back to look at it.

Need a drainage engineer near you?

Ring at any hour and the help desk books the nearest free engineer to you.